Academic literature on the topic 'Fermions'

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Journal articles on the topic "Fermions"

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Rout, Abhishek, and Brett Altschul. "Bound States and Particle Production by Breather-Type Background Field Configurations." Symmetry 16, no. 12 (2024): 1571. http://dx.doi.org/10.3390/sym16121571.

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We investigate the interaction of fermion fields with oscillating domain walls, inspired by breather-type solutions of the sine-Gordon equation, a nonlinear system of fundamental importance. Our study focuses on the fermionic bound states and particle production induced by a time-dependent scalar background field. The fermions couple to two domain walls undergoing harmonic motion, and we explore the resulting dynamics of the fermionic wave functions. We demonstrate that while fermions initially form bound states around the domain walls, the energy provided by the oscillatory motion of the scal
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Ma, Tian-Chi, Jing-Nan Hu, Yuan Chen, Lei Shao, Xian-Ru Hu, and Jian-Bo Deng. "Coexistence of type-II and type-IV Dirac fermions in SrAgBi." Modern Physics Letters B 35, no. 11 (2021): 2150181. http://dx.doi.org/10.1142/s0217984921501815.

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Relativistic massless Weyl and Dirac fermions have isotropic and linear dispersion relations to maintain Poincaré symmetry, which is the most basic symmetry in high-energy physics. The situation in condensed matter physics is less constrained; only certain subgroups of Poincaré symmetry — the 230 space groups that exist in 3D lattices — need be respected. Then, the free fermionic excitations that have no high-energy analogues could exist in solid state systems. Here, We discovered a type of nonlinear Dirac fermion without high-energy analogue in SrAgBi and named it type-IV Dirac fermion. The t
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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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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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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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Dajka, Jerzy. "Interference of Particles with Fermionic Internal Degrees of Freedom." Entropy 26, no. 6 (2024): 449. http://dx.doi.org/10.3390/e26060449.

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The interference of fermionic particles, specifically molecules comprising a small number of fermions, in a Mach–Zehnder interferometer is being investigated under the influence of both classical and non-classical external controls. The aim is to identify control strategies that can elucidate the relationship between the interference pattern and the characteristics of internal fermion–fermion interactions.
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CORDOVA, NICOLAS J. "FRACTIONAL CHARGE IN 1+1, 2+1 AND 3+1 DIMENSIONS." Modern Physics Letters A 06, no. 33 (1991): 3071–77. http://dx.doi.org/10.1142/s0217732391003560.

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Fractional charge is analyzed in models containing massive fermions interacting with topologically non-trivial background fields in 1+1, 2+1 and 3+1 dimensions. It is found that the induced vacuum fermionic charge depends discontinuously on the fermion mass, when scalar interactions are involved.
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Lee, Cheng-Yang. "Symmetries and unitary interactions of mass dimension one fermionic dark matter." International Journal of Modern Physics A 31, no. 35 (2016): 1650187. http://dx.doi.org/10.1142/s0217751x16501876.

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The fermionic fields constructed from Elko have several unexpected properties. They satisfy the Klein–Gordon but not the Dirac equation and are of mass dimension one instead of three-half. Starting with the Klein–Gordon Lagrangian, we initiate a careful study of the symmetries and interactions of these fermions and their higher-spin generalizations. We find, although the fermions are of mass dimension one, the four-point fermionic self-interaction violates unitarity at high-energy so it cannot be a fundamental interaction of the theory. Using the optical theorem, we derive an explicit bound on
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DOLOCAN, ANDREI, VOICU OCTAVIAN DOLOCAN, and VOICU DOLOCAN. "A NEW HAMILTONIAN OF INTERACTION FOR FERMIONS." Modern Physics Letters B 19, no. 13n14 (2005): 669–81. http://dx.doi.org/10.1142/s0217984905008700.

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Using the Lagrangian formalism we attempt to introduce a new Hamiltonian for fermions. On this basis we have evaluated the expectation values for the interaction energy between fermions via bosons. The interaction energy between two fermions via phonons becomes attractive in a degenerate fermion-gas. The interaction energy between two fermions via photons appears to be attractive in certain conditions. The self-energy of the fermion + boson system, e.g. polaron and polariton, was evaluated.
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Klaric, J., A. Shkerin, and G. Vacalis. "Non-perturbative production of fermionic dark matter from fast preheating." Journal of Cosmology and Astroparticle Physics 2023, no. 02 (2023): 034. http://dx.doi.org/10.1088/1475-7516/2023/02/034.

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Abstract We investigate non-perturbative production of fermionic dark matter in the early universe. We study analytically the gravitational production mechanism accompanied by the coupling of fermions to the background inflaton field. The latter leads to the variation of effective fermion mass during preheating and makes the resulting spectrum and abundance sensitive to its parameters. Assuming fast preheating that completes in less than the inflationary Hubble time and no oscillations of the inflaton field after inflation, we find an abundant production of particles with energies ranging from
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Dissertations / Theses on the topic "Fermions"

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Bullinaria, J. A. "Kaehler fermions." Thesis, University of Southampton, 1985. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.356054.

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Espin, Johnny. "Second-order fermions." Thesis, University of Nottingham, 2015. http://eprints.nottingham.ac.uk/29954/.

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It has been proposed several times in the past that one can obtain an equivalent, but in many aspects simpler description of fermions by first reformulating their first-order (Dirac) Lagrangian in terms of two-component spinors, and then integrating out the spinors of one chirality (e.g.primed or dotted). The resulting new Lagrangian is second-order in derivatives, and contains two-component spinors of only one chirality. The new second-order formulation simplifies the fermion Feynman rules of the theory considerably, e.g. the propagator becomes a multiple of an identity matrix in the field sp
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Ebling, Ulrich. "Dynamics of spinor fermions." Doctoral thesis, Universitat Politècnica de Catalunya, 2014. http://hdl.handle.net/10803/284656.

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Ultracold atomic gases have established themselves as quantum systems, which are clean and offer a high degree of control over crucial parameters. They are well isolated from their environment and thus offer the possibility to study coherent many-body dynamics. In this thesis, we address the dynamics of ultracold Fermions with large spin. Fermionic spinor gases differ from the typical situation in condensed matter physics, due to both the presence of the trap and the possibility of having fermions with large (>1/2) spin. Compared to the spin-1/2 case, large spin fermions must have one of two p
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Berzi, Alan. "Relativistic Fermions in Graphene." Thesis, Norges teknisk-naturvitenskapelige universitet, Institutt for fysikk, 2012. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-20657.

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The Fermi surface of graphene contains points where the connection between excitation energy and crystal momentum is linear, similar to massless or ultrarelativistic fermions. This is important for the physical properties of this material. In this thesis the candidate has combined a study of the theoretical and experimental literature with his own calculations of the excitation spectra of monolayer, bilayer and multilayer graphene.
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Laia, João Nuno De Araújo Lopes. "Holography, holonomy and fermions." Thesis, University of Cambridge, 2012. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.610474.

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Hands, Simon John. "Lattice theories with fermions." Thesis, University of Edinburgh, 1986. http://hdl.handle.net/1842/14982.

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Mou, Zong-Gang. "Fermions in electroweak baryogenesis." Thesis, University of Nottingham, 2015. http://eprints.nottingham.ac.uk/30597/.

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We study the chiral anomaly by solving the Dirac equation for fermions in parallel electric and magnetic fields. In such case, only the lowest-energy Landau levels are relevant to the anomaly. Specifically, for massless fermions, the chiral anomaly is a result of the production of particles of one chirality, and no creation of particles of the other chirality. For massive fermions, we find that the chiral anomaly equation can be simply obtained via a proper regularization of the range of the momentum. We extend the method to anomaly cancellation, and conclude that the conservation of the baryo
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Zanotti, James Michael. "Baryon spectroscopy with FLIC fermions." Title page, abstract and table of contents only, 2002. http://web4.library.adelaide.edu.au/theses/09PH/09phz33.pdf.

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"October 2002" Bibliography: p. 129-136. 1. Introduction -- 2. QCD and the standard model -- 3. The Lattice -- 4. Symanzik improvement in the Static Quark Potential -- 5. Scale determination for an improved Gluon Action -- 6. Fat-link Irrelevant Clover Fermion actions -- 7. Excited Baryons in Lattice QCD -- 8. Spin 3/2 Baryons -- 9. Conclusion. This thesis reports work done in conducting numerical simulations of Lattice QCD.
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Han, Li. "Spin-orbit coupled ultracold fermions." Diss., Georgia Institute of Technology, 2014. http://hdl.handle.net/1853/52314.

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In this Thesis we discussed ultracold Fermi gas with an s-wave interaction and synthetic spin-orbit coupling under a variety of conditions. We considered the system in both three and two spatial dimensions, with equal-Rashba-Dresselhaus type or Rashba-only type of spin-orbit-coupling, and with or without an artificial Zeeman field. We found competing effects on Fermionic superfluidity from spin-orbit coupling and Zeeman fields, and topologically non-trivial states in the presence of both fields. We gave an outlook on the many-body physics in the last.
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Schofield, Andrew John. "Flux phases for correlated fermions." Thesis, University of Cambridge, 1992. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.282101.

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Books on the topic "Fermions"

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Iachello, F. The interacting Boson-Fermion model. Cambridge University Press, 1991.

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Kopietz, Peter. Bosonization of interacting fermions in arbitrary dimensions. Springer, 1997.

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1940-, Szytuła Andrzej, ed. Valence fluctuations and heavy fermions. Nakł. Uniwersytetu Jagiellońskiego, 1990.

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Wojciechowski, Ryszard J. Thermodynamic and elastic properties of heavy fermion systems in the normal state. Wydawn. Nauk. Uniwersytetu im. Adama Mickiewica w Poznaniu, 1994.

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Tursunov, O. O. Numerical simulation of Fermi systems. Institute of Nuclear Physics, 1988.

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Zhirov, O. V. Probabilistic simulation of fermion paths. Institute of Nuclear Physics, 1989.

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Vorov, O. K. On the effective "chiral dynamics" in the problem of a large amplitude collective motion in a finite Fermi-system. Institute of Nuclear Physics, 1988.

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Martín, Laura Ortiz. Topological Orders with Spins and Fermions. Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-23649-6.

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Hewson, A. C. The Kondo problem to heavy fermions. Cambridge University Press, 1993.

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Welp, Ulrich. Heavy fermion behaviour and magnetism in CeB r, CePb r and Ucu r. Hartung-Gorre, 1989.

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Book chapters on the topic "Fermions"

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’t Hooft, Gerard. "Fermions." In Fundamental Theories of Physics. Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-41285-6_15.

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Stone, Michael. "Fermions." In Graduate Texts in Contemporary Physics. Springer New York, 2000. http://dx.doi.org/10.1007/978-1-4612-0507-4_7.

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Cline, James M. "Fermions." In SpringerBriefs in Physics. Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-56168-0_10.

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Kibler, Maurice, Mohammed Daoud, and Maurice Kibler. "Fermions." In Concise Encyclopedia of Supersymmetry. Springer Netherlands, 2004. http://dx.doi.org/10.1007/1-4020-4522-0_278.

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Roepstorff, Gert. "Fermions." In Path Integral Approach to Quantum Physics. Springer Berlin Heidelberg, 1994. http://dx.doi.org/10.1007/978-3-642-57886-1_10.

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Sator, Nicolas, Nicolas Pavloff, and Lénaïc Couëdel. "Fermions." In Statistical Physics. CRC Press, 2023. http://dx.doi.org/10.1201/9781003272427-8.

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Bonora, Loriano. "Fermions." In Theoretical and Mathematical Physics. Springer Nature Switzerland, 2023. http://dx.doi.org/10.1007/978-3-031-21928-3_1.

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Laine, Mikko, and Aleksi Vuorinen. "Fermions." In Basics of Thermal Field Theory. Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-31933-9_4.

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Wetterich, Christof. "Fermions." In Fundamental Theories of Physics. Springer Nature Switzerland, 2025. https://doi.org/10.1007/978-3-031-83213-0_5.

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Gattringer, Christof, and Christian B. Lang. "Dynamical fermions." In Quantum Chromodynamics on the Lattice. Springer Berlin Heidelberg, 2009. http://dx.doi.org/10.1007/978-3-642-01850-3_8.

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Conference papers on the topic "Fermions"

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Kishore, Abhijeet, Subhasish Basak, and Dipankar Chakrabarti. "Eigenspectra of Minimally Doubled Fermions." In The 41st International Symposium on Lattice Field Theory. Sissa Medialab, 2025. https://doi.org/10.22323/1.466.0355.

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Rantaharju, Jarno, Vincent Drach, Ari Hietanen, Claudio Pica, and Francesco Sannino. "Wilson Fermions with Four Fermion Interactions." In The 33rd International Symposium on Lattice Field Theory. Sissa Medialab, 2016. http://dx.doi.org/10.22323/1.251.0228.

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AMBRUŞ, VICTOR E., and ELIZABETH WINSTANLEY. "ROTATING FERMIONS." In Proceedings of the MG13 Meeting on General Relativity. WORLD SCIENTIFIC, 2015. http://dx.doi.org/10.1142/9789814623995_0330.

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Bergshoeff, Eric, Andrea Campoleoni, Andrea Fontanella, Lea Mele, and Jan Rosseel. "Carroll Fermions." In Corfu Summer Institute 2023 "School and Workshops on Elementary Particle Physics and Gravity". Sissa Medialab, 2024. http://dx.doi.org/10.22323/1.463.0235.

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Kanamoto, Rina, and Makoto Tsubota. "Energy Spectrum of Fermions in a Rotating Boson-Fermion Mixture." In LOW TEMPERATURE PHYSICS: 24th International Conference on Low Temperature Physics - LT24. AIP, 2006. http://dx.doi.org/10.1063/1.2354606.

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Creutz, Michael. "Local chiral fermions." In The XXVI International Symposium on Lattice Field Theory. Sissa Medialab, 2009. http://dx.doi.org/10.22323/1.066.0080.

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Osborn, James, and Xiao-Yong Jin. "Flavor Filtered Fermions." In The 33rd International Symposium on Lattice Field Theory. Sissa Medialab, 2016. http://dx.doi.org/10.22323/1.251.0287.

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Mart, T. "Are protons nonidentical fermions?" In 3RD INTERNATIONAL CONFERENCE ON THEORETICAL AND APPLIED PHYSICS 2013 (ICTAP 2013). AIP Publishing LLC, 2014. http://dx.doi.org/10.1063/1.4897090.

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Greene, Patrick B. "Inflationary reheating and fermions." In COSMO--98. ASCE, 1999. http://dx.doi.org/10.1063/1.59436.

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KENNEDY, A. D. "ALGORITHMS FOR DYNAMICAL FERMIONS." In Proceedings of the Workshop. WORLD SCIENTIFIC, 2007. http://dx.doi.org/10.1142/9789812790927_0002.

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Reports on the topic "Fermions"

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Grossman, Y. Twisted Split Fermions. Office of Scientific and Technical Information (OSTI), 2004. http://dx.doi.org/10.2172/827303.

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Hirshfeld, Allen C. Fermions and Supersymmetry. GIQ, 2012. http://dx.doi.org/10.7546/giq-5-2004-51-66.

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Vekhter, Ilya. Inhomogeneous disorder Dirac Fermions: from heavy fermion superconductors to graphene. Final report. Office of Scientific and Technical Information (OSTI), 2013. http://dx.doi.org/10.2172/1089679.

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Neumeier, John. Investigations of Dimensionally-Constrained Fermions. Office of Scientific and Technical Information (OSTI), 2022. http://dx.doi.org/10.2172/1867885.

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Trugman, S., K. Bedell, J. Bonca, M. Gulacsi, and C. Yu. Heavy fermions in high magnetic fields. Office of Scientific and Technical Information (OSTI), 1996. http://dx.doi.org/10.2172/266362.

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Pu, Han, and Randall Hulet. Optical Lattice Simulations of Correlated Fermions. Defense Technical Information Center, 2013. http://dx.doi.org/10.21236/ada603643.

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Gupta, R., G. Guralnik, G. Kilcup, and S. Sharpe. The quenched spectrum with staggered fermions. Office of Scientific and Technical Information (OSTI), 1990. http://dx.doi.org/10.2172/5929696.

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Pan, Wei, Xiaoyan Shi, Samuel D. Hawkins, and John Frederick Klem. Search for Majorana fermions in topological superconductors. Office of Scientific and Technical Information (OSTI), 2014. http://dx.doi.org/10.2172/1177084.

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Chan, H. S. Continuum regularization of gauge theory with fermions. Office of Scientific and Technical Information (OSTI), 1987. http://dx.doi.org/10.2172/6347357.

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Horng, Jason, Chi-Fan Chen, Baisong Geng, et al. Drude Conductivity of Dirac Fermions in Graphene. Defense Technical Information Center, 2010. http://dx.doi.org/10.21236/ada526672.

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