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Journal articles on the topic 'Fermi's theory'

Author: Grafiati

Published: 28 May 2022

Last updated: 31 July 2025

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1

Yang, Chen Ning. "Fermi's β-decay Theory". Asia Pacific Physics Newsletter 01, № 01 (2012): 27–30. http://dx.doi.org/10.1142/s2251158x12000045.

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2

YANG, CHEN NING. "FERMI'S β-DECAY THEORY". International Journal of Modern Physics A 27, № 03n04 (2012): 1230005. http://dx.doi.org/10.1142/s0217751x12300050.

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3

Franklin, Allan. "Experiment and the Development of the Theory of Weak Interactions: Fermi's Theory." PSA: Proceedings of the Biennial Meeting of the Philosophy of Science Association 1986, no. 2 (1986): 163–79. http://dx.doi.org/10.1086/psaprocbienmeetp.1986.2.192798.

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4

Landi, Alessandro, and Daniele Padula. "Multiple charge separation pathways in new-generation non-fullerene acceptors: a computational study." Journal of Materials Chemistry A 9, no. 44 (2021): 24849–56. http://dx.doi.org/10.1039/d1ta05664f.

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Through a combination of molecular dynamics, density functional theory and Fermi's golden rule, computational modelling of two all-small-molecule organic bulk heterojunctions provides a simple rationalisation of the great performance of Y6.

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5

Hotokezaka, Kenta, Re'em Sari, and Tsvi Piran. "Analytic heating rate of neutron star merger ejecta derived from Fermi's theory of beta decay." Monthly Notices of the Royal Astronomical Society 468, no. 1 (2017): 91–96. http://dx.doi.org/10.1093/mnras/stx411.

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6

Taj, D., R. C. Iotti, and F. Rossi. "Microscopic theory of energy dissipation and decoherence in open systems: A quantum Fermi's golden rule." Journal of Physics: Conference Series 193 (November 1, 2009): 012135. http://dx.doi.org/10.1088/1742-6596/193/1/012135.

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7

Duke, Jessica Ryan, and Nandini Ananth. "Mean field ring polymer molecular dynamics for electronically nonadiabatic reaction rates." Faraday Discussions 195 (2016): 253–68. http://dx.doi.org/10.1039/c6fd00123h.

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We present a mean field ring polymer molecular dynamics method to calculate the rate of electron transfer (ET) in multi-state, multi-electron condensed-phase processes. Our approach involves calculating a transition state theory (TST) estimate to the rate using an exact path integral in discrete electronic states and continuous Cartesian nuclear coordinates. A dynamic recrossing correction to the TST rate is then obtained from real-time dynamics simulations using mean field ring polymer molecular dynamics. We employ two different reaction coordinates in our simulations and show that, despite t

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8

Song, Jian Jun, Hua Ying Wu, He Ming Zhang, Hui Yong Hu, and Heng Sheng Shan. "Model of Electron Scattering of Strained Si /Si1-xGex (100)." Applied Mechanics and Materials 110-116 (October 2011): 3338–42. http://dx.doi.org/10.4028/www.scientific.net/amm.110-116.3338.

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Based on Fermi's golden rule and the theory of Boltzmann collision term approximation, taking into account all the scattering mechanisms contributed by ionized impurity, acoustic phonon and intervalley phonon, the model of total scattering rate of strained Si/(100) Si1-xGex is established. Simulating of the scattering models with Matlab software, it was found that the total scattering rate of electron in strained Si/(100) Si1-xGex decreases obviously with the increasing stress when Ge fraction x is less than 0.2 and the values continue to show a constant tendency, and that the total electron s

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9

KHVIENGIA, Z., and V. F. TOKAREV. "CIRCUMSTANCES OF FERMION FRACTIONIZATION IN HIGH DENSITY FERMI GAS." Modern Physics Letters A 07, no. 23 (1992): 2143–51. http://dx.doi.org/10.1142/s0217732392001889.

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We consider a (3 + 1)-dimensional SU(2)-gauge theory which is known to possess the fractional fermions. These are the monopoles. We compute the fermion number of a monopole in the dense Fermi gas and find the conditions under which fermions decay into the monopoles.

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10

Lu, Tan. "Scientific Achievements of Prof. Chien Shiung Wu." Asia Pacific Physics Newsletter 01, no. 02 (2012): 52–59. http://dx.doi.org/10.1142/s2251158x12000276.

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Five years ago, we wrote two papers in memory of Prof. Chien Shiung Wu [1-2]. And now in memory of her 100th birthday, I am very happy to write this paper again. Indeed, she is a world top-class female experimental nuclear physicist. She is also known as the Chinese Madame Curie. As is well known, Madame (Marie) Curie was the first in discovering the radioactive substances, while C. S. Wu was the first in thoroughly studying β-decay, the most mysterious one among radioactivities. C. S. Wu did various experiments in proving the Fermi's theory of β-decay carefully and precisely, and even also im

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11

Schaich, David, and Simon Catterall. "Phases of a strongly coupled four-fermion theory." EPJ Web of Conferences 175 (2018): 03004. http://dx.doi.org/10.1051/epjconf/201817503004.

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We present ongoing investigations of a four-dimensional lattice field theory with four massless reduced staggered fermions coupled through an SU(4)-invariant fourfermion interaction. As in previous studies of four-fermion and Higgs–Yukawa models with different lattice fermion discretizations, we observe a strong-coupling phase in which the system develops a mass gap without breaking any lattice symmetry. This symmetric strong-coupling phase is separated from the symmetric weak-coupling phase by a narrow region of four-fermi coupling in which the system exhibits long-range correlations.

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12

Seshavatharam, U. V. S., T. Gunavardhana Naidu, and S. Lakshminarayana. "Nuclear evidences for confirming the physical existence of 585 ‎GeV weak fermion and galactic observations of TeV radiation." International Journal of Advanced Astronomy 13, no. 1 (2025): 1–17. https://doi.org/10.14419/yqrd2j69.

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Background: In our recent publications pertaining to 4G model of final unification and based on strong and electroweak interactions, we have proposed the existence of a weak fermion of rest energy 585 GeV. Objective: To confirm the physical existence of the proposed 585 GeV weak fermion by analyzing weak and strong interactions in a unified approach via 4G model of final unification, super symmetry and string theory. Method: Considering the proposed nuclear charge of 2.95e, proton, electron mass ratio, specific charge ratios of proton and electron, Fermi’s weak coupling constant, Reduced Planc

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13

Yuan, Qian-Qian, Liqin Zhou, Zhi-Cheng Rao, et al. "Quasiparticle interference evidence of the topological Fermi arc states in chiral fermionic semimetal CoSi." Science Advances 5, no. 12 (2019): eaaw9485. http://dx.doi.org/10.1126/sciadv.aaw9485.

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Chiral fermions in solid state feature “Fermi arc” states, connecting the surface projections of the bulk chiral nodes. The surface Fermi arc is a signature of nontrivial bulk topology. Unconventional chiral fermions with an extensive Fermi arc traversing the whole Brillouin zone have been theoretically proposed in CoSi. Here, we use scanning tunneling microscopy/spectroscopy to investigate quasiparticle interference at various terminations of a CoSi single crystal. The observed surface states exhibit chiral fermion–originated characteristics. These reside on (001) and (011) but not (111) surf

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14

Sato, Masahiro, and Susumu Okazaki. "Vibrational Relaxation Time of CN−Ion in Water Studied by Mixed Quantum-classical Molecular Dynamics: Comparison with Fermi's Golden Rule and Influence Functional Theory." Molecular Simulation 30, no. 13-15 (2004): 835–39. http://dx.doi.org/10.1080/08927020412331298748.

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15

Butt, Nouman, Simon Catterall, and Goksu Can Toga. "Symmetric Mass Generation in Lattice Gauge Theory." Symmetry 13, no. 12 (2021): 2276. http://dx.doi.org/10.3390/sym13122276.

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We construct a four-dimensional lattice gauge theory in which fermions acquire mass without breaking symmetries as a result of gauge interactions. Our model consists of reduced staggered fermions transforming in the bifundamental representation of an SU(2)×SU(2) gauge symmetry. This fermion representation ensures that single-site bilinear mass terms vanish identically. A symmetric four-fermion operator is however allowed, and we give numerical results that show that a condensate of this operator develops in the vacuum.

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16

CASAS, M., A. PUENTE, A. RIGO, et al. "BEC-DRIVEN SUPERCONDUCTIVITY IN THE CUPRATES." International Journal of Modern Physics B 13, no. 29n31 (1999): 3489–91. http://dx.doi.org/10.1142/s021797929900326x.

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We apply to cuprates a three-fluid ideal boson-fermion statistical model of superconductivity in two dimensions (2D) derived from three extrema of the system Helmholtz free energy (subject to constant total fermion-number) for the BCS model interaction between fermions. The same interactions absent in BCS theory are neglected here. As the ensuing bosonic Cooper pairs move not in vacuum but in a Fermi sea we employ the correct linear — as opposed to the commonly-assumed quadratic — dispersion relation in the center-of-mass momentum (CMM). More importantly, pair breakup beyond a certain (very sm

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17

Wheatley, Joseph. "Two Quantum Liquids." International Journal of Modern Physics B 03, no. 12 (1989): 2019–47. http://dx.doi.org/10.1142/s0217979289001305.

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We describe a theory of the two dimensional Heisenberg-Hubbard model working in the spin and hole fermion representation based on the use of a singular gauge transformation on the spins. We are motivated by a new mean field theory for a system of strongly coupled fermions and bosons which is also described. In the latter case we obtain the bose condensed—fermi liquid phase; in the former we obtain equations governing generalized flux phases. We do not find superconducting solutions to these equations in the atomic limit, J=0. If solutions exist for finite J case then it is argued that an energ

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18

Jakovác, Antal, and András Patkós. "Bound states in functional renormalization group." International Journal of Modern Physics A 34, no. 27 (2019): 1950154. http://dx.doi.org/10.1142/s0217751x19501549.

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Equivalence criteria are established for an effective Yukawa-type theory of composite fields representing two-particle fermion bound states with the original “microscopic” theory of interacting fermions based on the spectral decomposition of the 2-to-2 fermion scattering amplitude. Functional renormalization group equations of the effective theory are derived exploiting relations expressing the equivalence. The effect of truncating the spectral decomposition is investigated quantitatively on the example of the nonrelativistic bound states of two oppositely charged fermions.

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19

DHAR, AVINASH, GAUTAM MANDAL, and SPENTA R. WADIA. "STRINGY QUANTUM EFFECTS IN TWO-DIMENSIONAL BLACK HOLE." Modern Physics Letters A 07, no. 39 (1992): 3703–15. http://dx.doi.org/10.1142/s0217732392003128.

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We discuss the classical two-dimensional black hole in the framework of the non-perturbative formulation (in terms of non-relativistic fermions) of c=1 string field theory. We identify an off-shell operator whose classical equation of motion is that of tachyon in the classical graviton-dilaton black hole background. The black hole ‘singularity’ is identified with the Fermi surface in the phase space of a single fermion, and as such is a consequence of the semiclassical approximation. An exact treatment reveals that stringy quantum effects wash away the classical singularity.

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20

XIE, X. C., H. A. FERTIG, and S. DAS SARMA. "THEORY OF PAIRING IN THE ANYON MODEL." Modern Physics Letters B 04, no. 20 (1990): 1265–71. http://dx.doi.org/10.1142/s0217984990001598.

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We study the semion pairing problem in the fermion representation by considering a semion as a fermion with a flux tube of ϕ=ϕ0/2. We solve analytically the problem of a pair of semions in a semion gas by treating the rest of the semions in the mean field approximation. We find that a bound pair forms that consists of two fermions from the two lowest Landau levels and a flux tube with ϕ=ϕ0.

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21

Irkhin, Valentin Yu. "Ideas by S.V. Vonsovsky and Modern Model Treatment of Magnetism." Solid State Phenomena 168-169 (December 2010): 3–11. http://dx.doi.org/10.4028/www.scientific.net/ssp.168-169.3.

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A review of fundamental works by Shubin and Vonsovsky on the formulation of the polar and s–d(f) exchange models is given. Their ideas are compared with subsequent developments in the theory of magnetism in d- and f-metals and their compounds. Modern approaches including various slave-boson and slave-fermion representations, formation of exotic quasiparticles etc. are discussed. Internal connections between different many-electron models (the Heisenberg, Hubbard, t–J, Anderson Hamiltonians) are presented. Description of anomalous rare-earth and actinide compounds (Kondo lattices, systems with

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22

Farakos, K., and N. E. Mavromatos. "Gauge-Theory Approach to Planar Doped Antiferromagnets and External Magnetic Fields." International Journal of Modern Physics B 12, no. 07n08 (1998): 809–36. http://dx.doi.org/10.1142/s0217979298000478.

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Within the framework of a relativistic non-Abelian gauge theory approach to the physics of spin–charge separation in doped quantum antiferromagnetic planar systems, proposed recently by the authors, we are examining here the effects of constant external magnetic fields on excitations about the superconducting state in the model. The electrically-charged Dirac fermions (holons), describing excitations about specific points on the fermi surface, e.g. those corresponding to the nodes of a d-wave superconducting gap in high-T c cuprates, condense, resulting in the opening of a Kosterlitz–Thouless–

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23

GUENDELMAN, E. I., and A. B. KAGANOVICH. "DARK ENERGY, DARK MATTER AND FERMION FAMILIES IN THE TWO MEASURES THEORY." International Journal of Modern Physics A 19, no. 31 (2004): 5325–32. http://dx.doi.org/10.1142/s0217751x04022542.

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A field theory is proposed where the regular fermionic matter and the dark fermionic matter are different states of the same "primordial" fermion fields. In regime of the fermion densities typical for normal particle physics, each of the primordial fermions splits into three generations identified with regular fermions. In a simple model, this fermion families birth effect is accompanied with the right lepton numbers conservation laws. It is possible to fit the muon to electron mass ratio without fine tuning of the Yukawa coupling constants. When fermion energy density becomes comparable with

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24

Halperin, Bertrand I. "Composite fermions and the Fermion–Chern–Simons theory." Physica E: Low-dimensional Systems and Nanostructures 20, no. 1-2 (2003): 71–78. http://dx.doi.org/10.1016/j.physe.2003.09.022.

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25

Giannakis, Ioannis, Justin Leshen, Mariam Kavai, et al. "Orbital-selective Kondo lattice and enigmatic f electrons emerging from inside the antiferromagnetic phase of a heavy fermion." Science Advances 5, no. 10 (2019): eaaw9061. http://dx.doi.org/10.1126/sciadv.aaw9061.

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Novel electronic phenomena frequently form in heavy-fermions because of the mutual localized and itinerant nature of f-electrons. On the magnetically ordered side of the heavy-fermion phase diagram, f-moments are expected to be localized and decoupled from the Fermi surface. It remains ambiguous whether Kondo lattice can develop inside the magnetically ordered phase. Using spectroscopic imaging with scanning tunneling microscope, complemented by neutron scattering, x-ray absorption spectroscopy, and dynamical mean field theory, we probe the electronic states in antiferromagnetic USb2. We visua

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26

KHOKHLACHEV, S., and YU MAKEENKO. "ADJOINT FERMIONS INDUCE QCD." Modern Physics Letters A 07, no. 39 (1992): 3653–67. http://dx.doi.org/10.1142/s0217732392003086.

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We propose to induce QCD by fermions in the adjoint representation of the gauge group SU (Nc) on the lattice. We consider various types of lattice fermions: chiral, Kogut-Susskind and Wilson ones. Using the mean field method we show that a first order large-N phase transition occurs with decreasing fermion mass. We conclude, therefore, that adjoint fermions induce QCD. We draw the same conclusion for the adjoint scalar or fermion models at large number of flavors Nf when they induce a single-plaquette lattice gauge theory. We find an exact strong coupling solution for the adjoint fermion model

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27

GUENDELMAN, E. I., and A. B. KAGANOVICH. "NEW PHYSICS AT LOW ENERGIES AND DARK MATTER-DARK ENERGY TRANSMUTATION." International Journal of Modern Physics A 20, no. 06 (2005): 1140–47. http://dx.doi.org/10.1142/s0217751x05024018.

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A field theory is proposed where the regular fermionic matter and the dark fermionic matter can be different states of the same "primordial" fermion fields. In regime of the fermion densities typical for normal particle physics, the primordial fermions split into three families identified with regular fermions. When fermion energy density becomes comparable with dark energy density, the theory allows transition to new type of states. The possibility of such Cosmo-Low Energy Physics (CLEP) states is demonstrated by means of solutions of the field theory equations describing FRW universe filled

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28

Reis, João Alfíeres Andrade de Simões dos, and Marco Schreck. "Formal Developments for Lorentz-Violating Dirac Fermions and Neutrinos." Symmetry 11, no. 10 (2019): 1197. http://dx.doi.org/10.3390/sym11101197.

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The current paper is a technical work that is focused on Lorentz violation for Dirac fermions as well as neutrinos, described within the nonminimal Standard-Model Extension. We intend to derive two theoretical results. The first is the full propagator of the single-fermion Dirac theory modified by Lorentz violation. The second is the dispersion equation for a theory of N neutrino flavors that enables the description of both Dirac and Majorana neutrinos. As the matrix structure of the neutrino field operator is very involved for generic N, we will use sophisticated methods of linear algebra to

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29

Ambruş, Victor E., Carl Kent, and Elizabeth Winstanley. "Analysis of scalar and fermion quantum field theory on anti-de Sitter spacetime." International Journal of Modern Physics D 27, no. 11 (2018): 1843014. http://dx.doi.org/10.1142/s0218271818430149.

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We study vacuum and thermal expectation values of quantum scalar and Dirac fermion fields on anti-de Sitter (adS) spacetime. AdS spacetime is maximally symmetric and this enables expressions for the scalar and fermion vacuum Feynman Green’s functions to be derived in closed form. We employ Hadamard renormalization to find the vacuum expectation values (v.e.v.s). The thermal Feynman Green’s functions are constructed from the vacuum Feynman Green’s functions using the imaginary time periodicity/anti-periodicity property for scalars/fermions. Focusing on massless fields with either conformal or m

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30

Adler, Stephen L. "SU(8) family unification with boson–fermion balance." International Journal of Modern Physics A 29, no. 22 (2014): 1450130. http://dx.doi.org/10.1142/s0217751x14501309.

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We formulate an SU(8) family unification model motivated by requiring that the theory should incorporate the graviton, gravitinos, and the fermions and gauge fields of the standard model, with boson–fermion balance. Gauge field SU(8) anomalies cancel between the gravitinos and spin ½ fermions. The 56 of scalars breaks SU(8) to SU(3) family × SU(5) × U(1)/Z5, with the fermion representation content needed for "flipped" SU(5) with three families, and with residual scalars in the 10 and [Formula: see text] representations that break flipped SU(5) to the standard model. Dynamical symmetry breaking

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31

SARIRIAN, KAMRAN. "ON FERMION ZERO MODES IN INSTANTON V - A MODELS WITH SPONTANEOUS SYMMETRY BREAKING." Modern Physics Letters A 09, no. 08 (1994): 715–23. http://dx.doi.org/10.1142/s0217732394000526.

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The left- and right-handed fermion zero modes are examined. Their behavior under the variation of the size of the instanton, ρ I , and the size of the Higgs core, ρ H , for a range of Yukawa couplings corresponding to the fermion masses in the electroweak theory are studied. It is shown that the characteristic radii of the zero modes, in particular those of the left-handed fermions, are locked to the instanton size, and are not affected by the variation of ρ H , except for fermion masses much larger than those in the standard electroweak theory.

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32

DRYZEK, JERZY, AKIRA KATO, GERARDO MUÑOZ, and DOUGLAS SINGLETON. "ELECTRONS AS QUASI-BOSONS IN MAGNETIC WHITE DWARFS." International Journal of Modern Physics D 11, no. 03 (2002): 417–25. http://dx.doi.org/10.1142/s0218271802001512.

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A white dwarf star achieves its equilibrium from the balancing of the gravitational compression against the Fermi degeneracy pressure of the electron gas. In field theory there are examples (e.g. the monopole-charge system) where a strong magnetic field can transform a boson into a fermion or a fermion into a boson. In some condensed matter systems (e.g. fractional quantum Hall systems) a strong magnetic field can transform electrons into effective fermions, or effective anyons. Based on these examples we investigate the possibility that the strong magnetic fields of some white dwarfs may tran

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33

BELVEDERE, L. V., R. L. P. G. AMARAL, N. A. LEMOS, and C. G. CARVALHAES. "HIGHER-DERIVATIVE TWO-DIMENSIONAL MASSIVE FERMION THEORIES." International Journal of Modern Physics A 15, no. 15 (2000): 2237–54. http://dx.doi.org/10.1142/s0217751x00000926.

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We consider the canonical quantization of a generalized two-dimensional massive fermion theory containing higher odd-order derivatives. The requirements of Lorentz invariance, hermiticity of the Hamiltonian and absence of tachyon excitations suffice to fix the mass term, which contains a derivative coupling. We show that the basic quantum excitations of a higher-derivative theory of order 2N+1 consist of a physical usual massive fermion, quantized with positive metric, plus 2N unphysical massless fermions, quantized with opposite metrics. The positive-metric Hilbert subspace, which is isomorph

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34

Coddens, Gerrit. "The Exact Theory of the Stern–Gerlach Experiment and Why it Does Not Imply that a Fermion Can Only Have Its Spin Up or Down." Symmetry 13, no. 1 (2021): 134. http://dx.doi.org/10.3390/sym13010134.

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The Stern–Gerlach experiment is notoriously counter-intuitive. The official theory is that the spin of a fermion remains always aligned with the magnetic field. Its directions are thus quantized: It can only be spin-up or spin-down. However, that theory is based on mathematical errors in the way it (mis)treats spinors and group theory. We present here a mathematically rigorous theory for a fermion in a magnetic field, which is no longer counter-intuitive. It is based on an understanding of spinors in SU(2) which is only Euclidean geometry. Contrary to what Pauli has been reading into the Stern

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35

BELYAEV, V. M., and IAN I. KOGAN. "MASSLESS FERMIONS IN KALUZA-KLEIN MODELS: SU(N) GAUGE FIELDS, ZN SYMMETRY AND STABILITY OF THE METASTABLE VACUUM." Modern Physics Letters A 07, no. 02 (1992): 117–29. http://dx.doi.org/10.1142/s0217732392000057.

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Kaluza-Klein model on M4×S1 with SU (N) gauge fields and Nf fermions in fundamental representation is considered. It is noted that on one-loop level the lowest state of this theory corresponds to effective four-dimensional theory which has no massless fermions. This statement does not depend on fermion boundary conditions. The state with mass-less four-dimensional fermions is metastable. It is shown that this metastable states can be stabilized by effects of classical gravitation. The same problem of metastability of states with zero fermionic modes can appear in more realistic superstring com

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Yablon, Jay R. "QCD Theory of the Hadrons and Filling the Yang–Mills Mass Gap." Symmetry 12, no. 11 (2020): 1887. http://dx.doi.org/10.3390/sym12111887.

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The rank-3 antisymmetric tensors which are the magnetic monopoles of SU(N) Yang–Mills gauge theory dynamics, unlike their counterparts in Maxwell’s U(1) electrodynamics, are non-vanishing, and do permit a net flux of Yang–Mills analogs to the magnetic field through closed spatial surfaces. When electric source currents of the same Yang–Mills dynamics are inverted and their fermions inserted into these Yang–Mills monopoles to create a system, this system in its unperturbed state contains exactly three fermions due to the monopole rank-3 and its three additive field strength gradient terms in co

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37

Salmhofer, Manfred. "Continuous Renormalization for Fermions and Fermi Liquid Theory." Communications in Mathematical Physics 194, no. 2 (1998): 249–95. http://dx.doi.org/10.1007/s002200050358.

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BOTELHO, LUIZ C. L. "A PATH-INTEGRAL APPROACH FOR BOSONIC EFFECTIVE THEORIES FOR FERMION FIELDS IN FOUR AND THREE DIMENSIONS." International Journal of Modern Physics A 15, no. 05 (2000): 755–70. http://dx.doi.org/10.1142/s0217751x00000379.

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We study four-dimensional effective bosonic field theories for (A) massive fermion field in the infrared region and (B) massive fermion in the ultraviolet region by using an appropriate fermion path integral chiral variable change and (C) Polyakov's Fermi–Bose transmutation in the 3D-Abelian Thirring model and its triviality as a quantum field theory.

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GIROTTI, H. O. "CANONICAL QUANTIZATION OF THE SELF-DUAL MODEL COUPLED TO FERMIONS." International Journal of Modern Physics A 14, no. 16 (1999): 2495–510. http://dx.doi.org/10.1142/s0217751x99001238.

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This paper is devoted to formulating the interaction-picture dynamics of the self-dual field minimally coupled to fermions. As a preliminary, we quantize the free self-dual model by means of the Dirac-bracket quantization procedure. The free self-dual model turns out to be a relativistically invariant quantum field theory whose excitations are identical to the physical (gauge-invariant) excitations of the free Maxwell–Chern–Simons theory. The interacting model is also quantized through the Dirac-bracket quantization procedure. One of the self-dual field components is found not to commute, at e

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40

CAZALILLA, M. A. "A COMPOSITE FERMION APPROACH TO THE ULTRACOLD DILUTE FERMI GAS." International Journal of Modern Physics B 25, no. 03 (2011): 329–45. http://dx.doi.org/10.1142/s0217979211057773.

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It is argued that the recently observed Fermi liquids in strongly interacting ultracold Fermi gases are adiabatically connected to a projected Fermi gas. This conclusion is reached by constructing a set of Jastrow wavefunctions, following Tan's observations on the structure of the physical Hilbert space [Annals of Physics 323, 2952 (2008)]. The Jastrow projection merely implements the Bethe–Peierls condition on the BCS and Fermi gas wavefunctions. This procedure provides a simple picture of the emergence of Fermi polarons as composite fermions in the normal state of the highly polarized gas. I

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Mousatov, Connie H., Erez Berg, and Sean A. Hartnoll. "Theory of the strange metal Sr3Ru2O7." Proceedings of the National Academy of Sciences 117, no. 6 (2020): 2852–57. http://dx.doi.org/10.1073/pnas.1915224117.

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The bilayer perovskite Sr3Ru2O7 has been widely studied as a canonical strange metal. It exhibits T-linear resistivity and a T log(1/T) electronic specific heat in a field-tuned quantum critical fan. Criticality is known to occur in “hot” Fermi pockets with a high density of states close to the Fermi energy. We show that while these hot pockets occupy a small fraction of the Brillouin zone, they are responsible for the anomalous transport and thermodynamics of the material. Specifically, a scattering process in which two electrons from the large, “cold” Fermi surfaces scatter into one hot and

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MOFFAT, J. W. "FINITE ELECTROWEAK THEORY WITHOUT A HIGGS PARTICLE." Modern Physics Letters A 06, no. 11 (1991): 1011–21. http://dx.doi.org/10.1142/s0217732391001068.

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A unified electroweak theory is formulated using non-local field theory without including a Higgs particle. The W and Z gauge boson masses are induced from one-loop vacuum polarization graphs and the non-local weak scale is determined by the W boson mass and the Fermi constant to be Λw=424 GeV . The tree graphs for the gauge bosons are identical to those of the standard local electroweak theory, so any violation of locality occurs only at the quantum level for the finite loop graphs. The fermion masses are obtained from a four-Fermi interaction with a spontaneously broken vacuum based on the f

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Shaginyan, Vasily R., Alfred Z. Msezane, and George S. Japaridze. "Peculiar Physics of Heavy-Fermion Metals: Theory versus Experiment." Atoms 10, no. 3 (2022): 67. http://dx.doi.org/10.3390/atoms10030067.

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This review considers the topological fermion condensation quantum phase transition (FCQPT) that leads to flat bands and allows the elucidation of the special behavior of heavy-fermion (HF) metals that is not exhibited by common metals described within the framework of the Landau Fermi liquid (LFL) theory. We bring together theoretical consideration within the framework of the fermion condensation theory based on the FCQPT with experimental data collected on HF metals. We show that very different HF metals demonstrate universal behavior induced by the FCQPT and demonstrate that Fermi systems n

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Rinaldi, E. "Investigation of the scalar spectrum in SU (3) with eight degenerate flavors." International Journal of Modern Physics A 32, no. 35 (2017): 1747002. http://dx.doi.org/10.1142/s0217751x17470029.

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The Lattice Strong Dynamics collaboration is investigating the properties of a SU(3) gauge theory with [Formula: see text] light fermions on the lattice. We measure the masses of the lightest pseudoscalar, scalar and vector states using simulations with the nHYP staggered-fermion action on large volumes and at small fermion masses, reaching [Formula: see text]. The axial-vector meson and the nucleon are also studied for the same range of fermion masses. One of the interesting features of this theory is the dynamical presence of a light flavor-singlet scalar state with [Formula: see text] quant

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Jain, J. K., and R. K. Kamilla. "Composite Fermions in the Hilbert Space of the Lowest Electronic Landau Level." International Journal of Modern Physics B 11, no. 22 (1997): 2621–60. http://dx.doi.org/10.1142/s0217979297001301.

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Single particle basis functions for composite fermions are obtained from which many-composite fermion states confined to the lowest electronic Landau level can be constructed in the standard manner, i.e. by building Slater determinants. This representation enables a Monte Carlo study of systems containing a large number of composite fermions, yielding new quantitative and qualitative information. The ground state energy and the gaps to charged and neutral excitations are computed for a number of fractional quantum Hall effect (FQHE) states, earlier off-limits to a quantitative investigation. T

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Liu, YuZhen, Bei Sha, Xia Tan, Zhie Liu, and Jie Zhang. "Modification to tunneling radiation of arbitrary spin fermions in stationary axisymmetric Sen black hole space–time." Canadian Journal of Physics 98, no. 11 (2020): 999–1003. http://dx.doi.org/10.1139/cjp-2019-0636.

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Considering the modified Lorentz dispersion relation, combined with the Dirac equation and Rarita–Schwinger equation of fermions in stationary axisymmetric Sen black hole space–time, the fermion tunneling radiation of the black hole is modified accurately, and meaningful physical quantities such as the modified fermion tunneling rate, event horizon temperature, and entropy of the black hole are obtained. The discussion of the conclusions shows that the effect of the Lorentz dispersion relation and Lorentz violation theory on particle dynamics must be considered in curved space–time during the

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PILAFTSIS, APOSTOLOS. "ANOMALOUS FERMION MASS GENERATION AT THREE LOOPS." Modern Physics Letters A 28, no. 22 (2013): 1350083. http://dx.doi.org/10.1142/s0217732313500831.

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We present a novel mechanism for generating fermion masses through global anomalies at the three-loop level. In a gauge theory, global anomalies are triggered by the possible existence of scalar or pseudoscalar states and heavy fermions, whose masses may not necessarily result from spontaneous symmetry breaking. The implications of this mass-generating mechanism for model building are discussed, including the possibility of creating low-scale fermion masses by quantum gravity effects.

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DHAR, AVINASH, GAUTAM MANDAL, and SPENTA R. WADIA. "NON-RELATIVISTIC FERMIONS, COADJOINT ORBITS OF W∞ AND STRING FIELD THEORY AT c=1." Modern Physics Letters A 07, no. 33 (1992): 3129–45. http://dx.doi.org/10.1142/s0217732392002512.

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We apply the method of coadjoint orbits of W∞-algebra to the problem of non-relativistic fermions in one dimension. This leads to a geometric formulation of the quantum theory in terms of the quantum phase space distribution of the Fermi fluid. The action has an infinite series of expansion in the string coupling, which to leading order reduces to the previously discussed geometric action for the classical Fermi fluid based on the group w∞ of area-preserving diffeomorphisms. We briefly discuss the strong coupling limit of the string theory which, unlike the weak coupling regime, does not seem

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Borštnik, Norma Susana Mankoč. "Clifford odd and even objects offer description of internal space of fermions and bosons, respectively, opening new insight into the second quantization of fields." Journal of Physics: Conference Series 2482, no. 1 (2023): 012011. http://dx.doi.org/10.1088/1742-6596/2482/1/012011.

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Abstract In a long series of works the author has demonstrated that the model named the spin-charge-family theory offers the explanation for all in the standard model assumed properties of the fermion and boson fields, as well as for many of their so far observed properties if the space-time is ≥ (13 + 1) while fermions interact with gravity only. In this talk, I briefly report on the so far achievements of the theory. The main contribution demonstrates the offer of the Clifford odd and even objects for the description of the internal spaces of fermion (Clifford odd) and boson (Clifford even)

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Patel, Aavishkar A., Haoyu Guo, Ilya Esterlis, and Subir Sachdev. "Universal theory of strange metals from spatially random interactions." Science 381, no. 6659 (2023): 790–93. http://dx.doi.org/10.1126/science.abq6011.

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Strange metals—ubiquitous in correlated quantum materials—transport electrical charge at low temperatures but not by the individual electronic quasiparticle excitations, which carry charge in ordinary metals. In this work, we consider two-dimensional metals of fermions coupled to quantum critical scalars, the latter representing order parameters or fractionalized particles. We show that at low temperatures ( T ), such metals generically exhibit strange metal behavior with a T -linear resistivity arising from spatially random fluctuations in the fermion-scalar Yukawa couplings about a nonzero s

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