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Journal articles on the topic 'Local quantum criticality'

Author: Grafiati

Published: 4 June 2021

Last updated: 11 February 2022

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1

Kim, Ki-Seok. "Stoner Instability Revisited: Emergence of Local Quantum Criticality?" Journal of the Physical Society of Japan 83, no. 4 (2014): 044709. http://dx.doi.org/10.7566/jpsj.83.044709.

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2

Continentino, Mucio A. "Local criticality close to a quantum Lifshitz point." Journal of Magnetism and Magnetic Materials 272-276 (May 2004): 231–33. http://dx.doi.org/10.1016/j.jmmm.2003.11.097.

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3

LUO, M. J. "ANOMALOUS LOCAL CRITICALITY IN HEAVY FERMION METALS FROM HOLOGRAPHY." Modern Physics Letters B 28, no. 01 (2013): 1450005. http://dx.doi.org/10.1142/s0217984914500055.

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In this paper, we propose a holographic theory to explain a number of anomalous critical phenomena observed in certain heavy fermion metals, e.g. CeCu 5.9 Au 0.1 and YbRh 2( Si 0.95 Ge 0.05)2, which are incompatible with any conventional spin-density-wave quantum critical point theory. We show that the non-Gaussian nature of the fixed point from holography plays an essential role in the physics of these materials near a quantum critical point, which is not in the same universality class of the spin-density-wave type fixed point. The critical spin fluctuations at the non-Gaussian fixed point ar

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4

LU, W., Y. J. WANG, and C. D. GONG. "DYNAMICS OF QUANTUM CRITICALITY IN TWO DIMENSIONS." Modern Physics Letters B 08, no. 14n15 (1994): 903–7. http://dx.doi.org/10.1142/s021798499400090x.

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A scaling hypothesis of the local spin and charge dynamic susceptibility is proposed for two-dimensional antiferromagnetically correlated quantum systems, which interpolate between the antiferromagnetic insulator limit and the nearly antiferromagnetic metal limit. The characteristic energy is calculated self-consistently by the sum rule. The quantum-critical behavior in the vicinity of a zero-temperature phase transition is responsible for the anomalies of high-T c cuprates.

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5

Tokiwa, Yoshifumi, Christian Stingl, Moo-Sung Kim, Toshiro Takabatake, and Philipp Gegenwart. "Characteristic signatures of quantum criticality driven by geometrical frustration." Science Advances 1, no. 3 (2015): e1500001. http://dx.doi.org/10.1126/sciadv.1500001.

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Geometrical frustration describes situations where interactions are incompatible with the lattice geometry and stabilizes exotic phases such as spin liquids. Whether geometrical frustration of magnetic interactions in metals can induce unconventional quantum critical points is an active area of research. We focus on the hexagonal heavy fermion metal CeRhSn, where the Kondo ions are located on distorted kagome planes stacked along the c axis. Low-temperature specific heat, thermal expansion, and magnetic Grüneisen parameter measurements prove a zero-field quantum critical point. The linear ther

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6

Luo, Yongkang, F. Ronning, N. Wakeham та ін. "Pressure-tuned quantum criticality in the antiferromagnetic Kondo semimetal CeNi2−δAs2". Proceedings of the National Academy of Sciences 112, № 44 (2015): 13520–24. http://dx.doi.org/10.1073/pnas.1509581112.

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The easily tuned balance among competing interactions in Kondo-lattice metals allows access to a zero-temperature, continuous transition between magnetically ordered and disordered phases, a quantum-critical point (QCP). Indeed, these highly correlated electron materials are prototypes for discovering and exploring quantum-critical states. Theoretical models proposed to account for the strange thermodynamic and electrical transport properties that emerge around the QCP of a Kondo lattice assume the presence of an indefinitely large number of itinerant charge carriers. Here, we report a systema

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7

Si, Qimiao. "Global magnetic phase diagram and local quantum criticality in heavy fermion metals." Physica B: Condensed Matter 378-380 (May 2006): 23–27. http://dx.doi.org/10.1016/j.physb.2006.01.156.

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8

Zhu, Wei, Xiao Chen, Yin-Chen He, and William Witczak-Krempa. "Entanglement signatures of emergent Dirac fermions: Kagome spin liquid and quantum criticality." Science Advances 4, no. 11 (2018): eaat5535. http://dx.doi.org/10.1126/sciadv.aat5535.

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Quantum spin liquids (QSLs) are exotic phases of matter that host fractionalized excitations. It is difficult for local probes to characterize QSL, whereas quantum entanglement can serve as a powerful diagnostic tool due to its nonlocality. The kagome antiferromagnetic Heisenberg model is one of the most studied and experimentally relevant models for QSL, but its solution remains under debate. Here, we perform a numerical Aharonov-Bohm experiment on this model and uncover universal features of the entanglement entropy. By means of the density matrix renormalization group, we reveal the entangl

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9

Ribeiro, Pedro, Qimiao Si, and Stefan Kirchner. "Local quantum criticality out of equilibrium: Effective temperatures and scaling in the steady-state regime." EPL (Europhysics Letters) 102, no. 5 (2013): 50001. http://dx.doi.org/10.1209/0295-5075/102/50001.

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10

Britz, D., and A. M. Strydom. "On the Antiferromagnetic Superconductor YbPd $$_2$$ 2 Sn: The Case for Local-Moment Quantum Criticality." Journal of Low Temperature Physics 179, no. 1-2 (2014): 62–68. http://dx.doi.org/10.1007/s10909-014-1225-2.

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11

Nussinov, Z., and J. Zaanen. "Stripe fractionalization I: The generation of king local symmetry." Journal de Physique IV 12, no. 9 (2002): 245–50. http://dx.doi.org/10.1051/jp4:20020405.

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This is part one in a series of two papers dedicated to the notion that the destruction of the topological order associated with stripe phases is about the simplest theory controlled by local symmetry: Ising gauge theory. This first part is intended to he a tutorial- we will exploit the simple physics of the stripes to vividly display the mathematical beauty of the gauge theory. Stripes, as they occur in the cuprates, are clearly `topological' in the sense that the lines of charges are at the same time domain walls in the antiferromagnet. Imagine that the stripes quantum melt so that all what

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12

Roychowdhury, Dibakar. "Broken Lifshitz Invariance, Spin Waves, and Hydrodynamics." Advances in High Energy Physics 2019 (June 2, 2019): 1–12. http://dx.doi.org/10.1155/2019/5356121.

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In this paper, based on the basic principles of thermodynamics, we explore the hydrodynamic regime of interacting Lifshitz field theories in the presence of broken rotational invariance. We compute the entropy current and discover new dissipative effects which are consistent with the principle of local entropy production in the fluid. In our analysis, we consider both the parity even and the parity odd sector upto first order in the derivative expansion. Finally, we argue that the present construction of the paper could be systematically identified as that of the hydrodynamic description assoc

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13

Tokiwa, Yoshifumi, Boy Piening, Hirale S. Jeevan, Sergey L. Bud’ko, Paul C. Canfield, and Philipp Gegenwart. "Super-heavy electron material as metallic refrigerant for adiabatic demagnetization cooling." Science Advances 2, no. 9 (2016): e1600835. http://dx.doi.org/10.1126/sciadv.1600835.

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Low-temperature refrigeration is of crucial importance in fundamental research of condensed matter physics, because the investigations of fascinating quantum phenomena, such as superconductivity, superfluidity, and quantum criticality, often require refrigeration down to very low temperatures. Currently, cryogenic refrigerators with3He gas are widely used for cooling below 1 K. However, usage of the gas has been increasingly difficult because of the current worldwide shortage. Therefore, it is important to consider alternative methods of refrigeration. We show that a new type of refrigerant, t

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14

Kim, Ki-Seok, and Akihiro Tanaka. "Emergent gauge fields and their nonperturbative effects in correlated electrons." Modern Physics Letters B 29, no. 16 (2015): 1540054. http://dx.doi.org/10.1142/s0217984915400540.

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The history of modern condensed matter physics may be regarded as the competition and reconciliation between Stoner’s and Anderson’s physical pictures, where the former is based on momentum–space descriptions focusing on long wave-length fluctuations while the latter is based on real-space physics emphasizing emergent localized excitations. In particular, these two view points compete with each other in various nonperturbative phenomena, which range from the problem of high [Formula: see text] superconductivity, quantum spin liquids in organic materials and frustrated spin systems, heavy-fermi

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15

ROBERTS, C. D., J. PRASCHIFKA, and R. T. CAHILL. "A CHIRALLY SYMMETRIC EFFECTIVE ACTION FOR VECTOR AND AXIAL VECTOR FIELDS IN A GLOBAL COLOR SYMMETRY MODEL OF QCD." International Journal of Modern Physics A 04, no. 07 (1989): 1681–733. http://dx.doi.org/10.1142/s0217751x89000674.

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We consider the quantum field theory of a model of an extended Nambu-Jona-Lasinio type with a QCD based nonlocal fermion current-current interaction which has global SU(Nc) symmetry. We obtain an exact bosonization of this model in four Euclidean dimensions using auxiliary bilocal fields and discuss the dynamical breakdown of chiral symmetry in the massless fermion limit. A local field bosonization is obtained by decomposing the bilocal fields in terms of complete orthonormal sets of functions with the expansion coefficients, which are local functions, identified as the local meson fields. Ret

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16

O'Brien, Sean E., and Paul LA Popelier. "Quantum molecular similarity. Part 2: The relation between properties in BCP space and bond length." Canadian Journal of Chemistry 77, no. 1 (1999): 28–36. http://dx.doi.org/10.1139/v98-215.

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In previous work we introduced an abstract space of bond critical point properties, called BCP space, to measure the similarity between molecules. In this contribution we critically examine the dependence of properties in BCP space on equilibrium bond length, a topic which has been extensively investigated in the literature. For that purpose we have designed a data set of 57 molecules yielding 731 bond critical points. We confirm the existence of local linear relationships provided the bonds vary little in their chemical surroundings. Such relationships break down completely for larger subsets

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17

Ougaard Dohn, Asmus, Daniele Selli, Gianluca Fazio, et al. "Interfacing CRYSTAL/AMBER to Optimize QM/MM Lennard–Jones Parameters for Water and to Study Solvation of TiO2 Nanoparticles." Molecules 23, no. 11 (2018): 2958. http://dx.doi.org/10.3390/molecules23112958.

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Metal oxide nanoparticles (NPs) are regarded as good candidates for many technological applications, where their functional environment is often an aqueous solution. The correct description of metal oxide electronic structure is still a challenge for local and semilocal density functionals, whereas hybrid functional methods provide an improved description, and local atomic function-based codes such as CRYSTAL17 outperform plane wave codes when it comes to hybrid functional calculations. However, the computational cost of hybrids are still prohibitive for systems of real sizes, in a real enviro

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18

Cascio, Michele, Ioannis Deretzis, Giuseppe Fisicaro, Giuseppe Falci, Giovanni Mannino, and Antonino Magna. "Tailoring Active Defect Centers During the Growth of Group IV Crystals†." Proceedings 12, no. 1 (2019): 32. http://dx.doi.org/10.3390/proceedings2019012032.

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Defects, e.g., Vacancies (Vs) and Defect-impurity centers, e.g., Nitrogen-Vacancy complexes (NVs), in group IV materials (diamond, SiC, graphene) are unique systems for Quantum Technologies (QT). The control of their positioning is a key issue for any realistic QT application and their tailored inclusion during controlled crystal-growth processes could overcome the limitations of other incorporation methods (e.g., ion implantation causing strong lattice damage). To date, the atomistic evolution regarding the growth of group IV crystals is barely known and this missing knowledge often results i

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19

Lawler, Michael J., and Eduardo Fradkin. "Local quantum criticality at the nematic quantum phase transition." Physical Review B 75, no. 3 (2007). http://dx.doi.org/10.1103/physrevb.75.033304.

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20

Ong, T. Tzen, and Piers Coleman. "Local Quantum Criticality of an Iron-Pnictide Tetrahedron." Physical Review Letters 108, no. 10 (2012). http://dx.doi.org/10.1103/physrevlett.108.107201.

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21

Tran, Minh-Tien, and Ki-Seok Kim. "Novel Duality in Disorder Driven Local Quantum Criticality." Physical Review Letters 105, no. 11 (2010). http://dx.doi.org/10.1103/physrevlett.105.116403.

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22

Donos, Aristomenis, Jerome P. Gauntlett, and Christiana Pantelidou. "Semi-local quantum criticality in string/M-theory." Journal of High Energy Physics 2013, no. 3 (2013). http://dx.doi.org/10.1007/jhep03(2013)103.

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23

Zhu, Lijun, Yan Chen, and Chandra M. Varma. "Local quantum criticality in the two-dimensional dissipative quantum XY model." Physical Review B 91, no. 20 (2015). http://dx.doi.org/10.1103/physrevb.91.205129.

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24

Rigol, M., A. Muramatsu, G. G. Batrouni, and R. T. Scalettar. "Local Quantum Criticality in Confined Fermions on Optical Lattices." Physical Review Letters 91, no. 13 (2003). http://dx.doi.org/10.1103/physrevlett.91.130403.

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25

Rangamani, Mukund, and Benjamin Withers. "Fermionic probes of local quantum criticality in one dimension." Physical Review D 84, no. 8 (2011). http://dx.doi.org/10.1103/physrevd.84.086003.

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26

Zhu, W., and Jian-Xin Zhu. "Local quantum criticality of a one-dimensional Kondo insulator model." Physical Review B 97, no. 24 (2018). http://dx.doi.org/10.1103/physrevb.97.245119.

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27

Dóra, Balázs. "Classical and quantum local criticality due to electron-vibration interaction." Physical Review B 79, no. 16 (2009). http://dx.doi.org/10.1103/physrevb.79.165121.

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28

Lahtinen, Ville, Teresia Mansson, and Eddy Ardonne. "Quantum criticality in many-body parafermion chains." SciPost Physics Core 4, no. 2 (2021). http://dx.doi.org/10.21468/scipostphyscore.4.2.014.

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We construct local generalizations of 3-state Potts models with exotic critical points. We analytically show that these are described by non-diagonal modular invariant partition functions of products of Z_3Z3 parafermion or u(1)_6u(1)6 conformal field theories (CFTs). These correspond either to non-trivial permutation invariants or block diagonal invariants, that one can understand in terms of anyon condensation. In terms of lattice parafermion operators, the constructed models correspond to parafermion chains with many-body terms. Our construction is based on how the partition function of a C

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29

Wang, M. S., J. H. Huang, C. H. Lee, X. G. Yin, X. W. Guan, and M. T. Batchelor. "Universal local pair correlations of Lieb-Liniger bosons at quantum criticality." Physical Review A 87, no. 4 (2013). http://dx.doi.org/10.1103/physreva.87.043634.

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30

Gralla, Samuel E., Arun Ravishankar, and Peter Zimmerman. "Semi-local quantum criticality and the instability of extremal planar horizons." Journal of High Energy Physics 2018, no. 12 (2018). http://dx.doi.org/10.1007/jhep12(2018)087.

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31

Liu, Yan, Koenraad Schalm, Ya-Wen Sun, and Jan Zaanen. "Lattice potentials and fermions in holographic non Fermi-liquids: hybridizing local quantum criticality." Journal of High Energy Physics 2012, no. 10 (2012). http://dx.doi.org/10.1007/jhep10(2012)036.

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32

Pelliciari, Jonathan, Kenji Ishii, Yaobo Huang, et al. "Reciprocity between local moments and collective magnetic excitations in the phase diagram of BaFe2(As1−xPx)2." Communications Physics 2, no. 1 (2019). http://dx.doi.org/10.1038/s42005-019-0236-3.

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Abstract Unconventional superconductivity arises at the border between the strong coupling regime with local magnetic moments and the weak coupling regime with itinerant electrons, and stems from the physics of criticality that dissects the two. Unveiling the nature of the quasiparticles close to quantum criticality is fundamental to understand the phase diagram of quantum materials. Here, using resonant inelastic x-ray scattering (RIXS) and $${\rm{Fe}}-{{\rm{K}}}_{\beta }$$ Fe − K β emission spectroscopy (XES), we visualize the coexistence and evolution of local magnetic moments and collectiv

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33

Ghaemi, Pouyan, Ashvin Vishwanath, and T. Senthil. "Finite-temperature properties of quantum Lifshitz transitions between valence-bond solid phases: An example of local quantum criticality." Physical Review B 72, no. 2 (2005). http://dx.doi.org/10.1103/physrevb.72.024420.

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34

Wang, M. S., J. H. Huang, C. H. Lee, X. G. Yin, X. W. Guan, and M. T. Batchelor. "Publisher's Note: Universal local pair correlations of Lieb-Liniger bosons at quantum criticality [Phys. Rev. A87, 043634 (2013)]." Physical Review A 87, no. 5 (2013). http://dx.doi.org/10.1103/physreva.87.059902.

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35

Wu, Ning, Matteo Baggioli, and Wei-Jia Li. "On the universality of AdS2 diffusion bounds and the breakdown of linearized hydrodynamics." Journal of High Energy Physics 2021, no. 5 (2021). http://dx.doi.org/10.1007/jhep05(2021)014.

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Abstract The chase of universal bounds on diffusivities in strongly coupled systems and holographic models has a long track record. The identification of a universal velocity scale, independent of the presence of well-defined quasiparticle excitations, is one of the major challenges of this program. A recent analysis, valid for emergent IR fixed points exhibiting local quantum criticality, and dual to IR AdS2 geometries, suggests to identify such a velocity using the time and length scales at which hydrodynamics breaks down — the equilibration velocity. The latter relates to the radius of conv

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36

Borla, Umberto, Ruben Verresen, Jeet Shah, and Sergej Moroz. "Gauging the Kitaev chain." SciPost Physics 10, no. 6 (2021). http://dx.doi.org/10.21468/scipostphys.10.6.148.

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We gauge the fermion parity symmetry of the Kitaev chain. While the bulk of the model becomes an Ising chain of gauge-invariant spins in a tilted field, near the boundaries the global fermion parity symmetry survives gauging, leading to local gauge-invariant Majorana operators. In the absence of vortices, the Higgs phase exhibits fermionic symmetry-protected topological (SPT) order distinct from the Kitaev chain. Moreover, the deconfined phase can be stable even in the presence of vortices. We also undertake a comprehensive study of a gently gauged model which interpolates between the ordinary

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37

Gatti, Carlo. "Chemical bonding in crystals: new directions." Zeitschrift für Kristallographie - Crystalline Materials 220, no. 5/6 (2005). http://dx.doi.org/10.1524/zkri.220.5.399.65073.

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AbstractAnalysis of the chemical bonding in the position space, instead of or besides that in the wave function (Hilbert) orbital space, has become increasingly popular for crystalline systems in the past decade. The two most frequently used investigative tools, the Quantum Theory of Atoms in Molecules and Crystal (QTAIMAC) and the Electron Localization Function (ELF) are thoroughly discussed. The treatment is focussed on the topological peculiarities that necessarily arise from the periodicity of the crystal lattice and on those facets of the two tools that have been more debated, especially

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