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Journal articles on the topic 'Quantum phase transitions (QPTs)'

Author: Grafiati

Published: 4 June 2021

Last updated: 1 February 2022

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1

Lü, J. M., X. P. Li, and L. C. Wang. "Geometric phase and the influence of the Dzyaloshinski–Moriya interaction in the one-dimensional quantum compass model." Modern Physics Letters B 29, no. 25 (2015): 1550146. http://dx.doi.org/10.1142/s0217984915501468.

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Geometric phase and quantum phase transition (QPT) of the one-dimensional (1D) quantum compass model with the Dzyaloshinski–Moriya (DM) interaction are investigated, and the effect of the DM interaction to the properties of geometric phase and QPTs of the model are discussed in this paper. Our study is an extension of the relation between the geometric phase and QPTs in the 1D spin systems.

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2

Iftikhar, Z., A. Anthore, A. K. Mitchell, et al. "Tunable quantum criticality and super-ballistic transport in a “charge” Kondo circuit." Science 360, no. 6395 (2018): 1315–20. http://dx.doi.org/10.1126/science.aan5592.

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Quantum phase transitions (QPTs) are ubiquitous in strongly correlated materials. However, the microscopic complexity of these systems impedes the quantitative understanding of QPTs. We observed and thoroughly analyzed the rich strongly correlated physics in two profoundly dissimilar regimes of quantum criticality. With a circuit implementing a quantum simulator for the three-channel Kondo model, we reveal the universal scalings toward different low-temperature fixed points and along the multiple crossovers from quantum criticality. An unanticipated violation of the maximum conductance for bal

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3

DE OLIVEIRA, ANDRÉ L. FONSECA, EFRAIN BUKSMAN, and JESÚS GARCÍA LÓPEZ DE LACALLE. "CUMULATIVE MEASURE OF CORRELATION FOR MULTIPARTITE QUANTUM STATES." International Journal of Modern Physics B 28, no. 07 (2014): 1450050. http://dx.doi.org/10.1142/s0217979214500507.

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The present article proposes a measure of correlation for multiqubit mixed states. The measure is defined recursively, accumulating the correlation of the subspaces, making it simple to calculate without the use of regression. Unlike usual measures, the proposed measure is continuous additive and reflects the dimensionality of the state space, allowing to compare states with different dimensions. Examples show that the measure can signal critical points (CPs) in the analysis of Quantum Phase Transitions (QPTs) in Heisenberg models.

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4

XU, SHUAI, XUE KE SONG, and LIU YE. "NEGATIVITY AND GEOMETRIC QUANTUM DISCORD AS INDICATORS OF QUANTUM PHASE TRANSITION IN THE XY MODEL WITH DZYALOSHINSKII–MORIYA INTERACTION." International Journal of Modern Physics B 27, no. 16 (2013): 1350074. http://dx.doi.org/10.1142/s0217979213500744.

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In this paper, we use the negativity and geometric quantum discord (GQD) to investigate the quantum phase transition (QPT) in the anisotropic spin-1/2 XY model with staggered Dzyaloshinskii–Moriya (DM) interaction using the quantum renormalization-group method, and the results show that the negativity and GQD can both obtain the quantum critical points associated with QPTs after several iterations of the renormalization. In addition to this, we discuss how the strength of the DM interaction and anisotropic parameter make the effect on the negativity and GQD for different RG steps. At last, we

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5

Qiang, Ling, Guang-Hua Liu, and Guang-Shan Tian. "Ferrimagnetic order and spontaneous magnetization in a mixed-spin XXZ chain with single-ion anisotropy." International Journal of Modern Physics B 29, no. 12 (2015): 1550070. http://dx.doi.org/10.1142/s0217979215500708.

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The ground-state properties of the spin-(1/2, 1) mixed-spin XXZ chain with single-ion anisotropy (D) are investigated by the infinite time-evolving block decimation (iTEBD) method. A ground-state phase diagram including three phases, i.e., a fully polarized phase, an XY phase and a ferrimagnetic phase, is obtained. The ferrimagnetic phase is found to extend to the regions with (Δ > 1, D > 0) and (Δ < 1, D < 0), where Δ denotes the coupling anisotropy between the localized spins. By the discontinuous behavior of bipartite entanglement, quantum phase transitions (QPTs) between the XY

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6

Martinez Alvarez, Victor M., Alejandro Cabo-Bizet, and Alejandro Cabo Montes de Oca. "How the insulator and pseudogap states coalesce beneath the superconductor dome." International Journal of Modern Physics B 28, no. 22 (2014): 1450146. http://dx.doi.org/10.1142/s021797921450146x.

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The pseudogap effects and the expected quantum phase transitions (QPTs) in cuprate materials are yet unclear in nature. A single band tight-binding (TB) model for the CuO 2 planes of these materials had predicted the existence of definite pseudogap states at half-filling, after considering that a crystal symmetry breaking and noncollinear spin orientations of the single particle states are allowed. Here we show that after including hole doping in the model, a QPT which lies beneath the superconducting dome exists and is a second-order one. In it, an antiferromagntic-insulator (AFI) ground stat

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7

WERLANG, T., G. A. P. RIBEIRO, and GUSTAVO RIGOLIN. "INTERPLAY BETWEEN QUANTUM PHASE TRANSITIONS AND THE BEHAVIOR OF QUANTUM CORRELATIONS AT FINITE TEMPERATURES." International Journal of Modern Physics B 27, no. 01n03 (2012): 1345032. http://dx.doi.org/10.1142/s021797921345032x.

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We review the main results and ideas showing that quantum correlations at finite temperatures (T), in particular quantum discord, are useful tools in characterizing quantum phase transitions (QPT) that only occur, in principle, at the unattainable absolute zero temperature. We first review some interesting results about the behavior of thermal quantum discord for small spin-1/2 chains and show that they already give us important hints of the infinite chain behavior. We then study in detail and in the thermodynamic limit (infinite chains) the thermal quantum correlations for the XXZ and XY mode

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8

Gavrielov, N., A. Leviatan, and F. Iachello. "Intertwined quantum phase transitions in the Zr chain." EPJ Web of Conferences 223 (2019): 01021. http://dx.doi.org/10.1051/epjconf/201922301021.

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We introduce the notion of intertwined quantum phase transitions (IQPTs), for which a crossing of two configurations coexists with a pronounced shape-evolution of each configuration. A detailed analysis in the framework of the interacting boson model with configuration mixing, provides evidence for this scenario inthe Zr isotopes. The latter exhibit a normal configuration which remains spherical along the chain, but exchanges roles with an intruder configuration, which undergoes first a spherical to prolate-deformed [U(5)→SU(3)] QPT and then a crossover to γ-unstable [SU(3)→SO(6)].

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9

SARANDY, MARCELO S., THIAGO R. DE OLIVEIRA, and LUIGI AMICO. "QUANTUM DISCORD IN THE GROUND STATE OF SPIN CHAINS." International Journal of Modern Physics B 27, no. 01n03 (2012): 1345030. http://dx.doi.org/10.1142/s0217979213450306.

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The ground state of a quantum spin chain is a natural playground for investigating correlations. Nevertheless, not all correlations are genuinely of quantum nature. Here we review the recent progress to quantify the "quantumness" of the correlations throughout the phase diagram of quantum spin systems. Focusing to one spatial dimension, we discuss the behavior of quantum discord (QD) close to quantum phase transitions (QPT). In contrast to the two-spin entanglement, pairwise discord is effectively long-ranged in critical regimes. Besides the features of QPT, QD is especially feasible to explor

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10

Carollo, Angelo, Bernardo Spagnolo, and Davide Valenti. "Non-Equilibrium Phenomena in Quantum Systems, Criticality and Metastability." Proceedings 12, no. 1 (2019): 43. http://dx.doi.org/10.3390/proceedings2019012043.

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We summarise here some relevant results related to non-equilibrium quantum systems. We characterise quantum phase transitions (QPT) in out-of-equilibrium quantum systems through a novel approach based on geometrical and topological properties of mixed quantum systems. We briefly describe results related to non-perturbative studies of the bistable dynamics of a quantum particle coupled to an environment. Finally, we shortly summarise recent studies on the generation of solitons in current-biased long Josephson junctions.

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11

Menon, Anirudha, Debashree Chowdhury, and Banasri Basu. "Hybridization and Field Driven Phase Transitions in Hexagonally Warped Topological Insulators." SPIN 06, no. 02 (2016): 1640005. http://dx.doi.org/10.1142/s2010324716400051.

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In this paper, we discuss the role of material parameters and external field effects on a thin film topological insulator(TI) in the context of quantum phase transition (QPT). First, we consider an in-plane tilted magnetic field and determine the band structure of the surface states as a function of the tilt angle. We show that the presence of either a hybridization term or hexagonal warping or a combination of both leads to a semi-metal to insulator phase transition which is facilitated by their [Formula: see text] symmetry breaking character. We then note that while the introduction of an el

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12

RING, P., H. ABUSARA, A. V. AFANASJEV, G. A. LALAZISSIS, T. NIKŠIĆ, and D. VRETENAR. "MODERN APPLICATIONS OF COVARIANT DENSITY FUNCTIONAL THEORY." International Journal of Modern Physics E 20, no. 02 (2011): 235–43. http://dx.doi.org/10.1142/s0218301311017570.

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Modern applications of Covariant Density Functional Theory (CDFT) are discussed. First we show a systematic investigation of fission barriers in actinide nuclei within constraint relativistic mean field theory allowing for triaxial deformations. In the second part we discuss a microscopic theory of quantum phase transitions (QPT) based on the relativistic generator coordinate method.

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13

Joyia, Wajid, and Khalid Khan. "Dzyaloshinskii–Moriya interaction and anisotropy effects on the tripartite quantum discord of Heisenberg XY model." International Journal of Quantum Information 15, no. 03 (2017): 1750021. http://dx.doi.org/10.1142/s0219749917500216.

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In this paper, we address the tripartite quantum discord for the Heisenberg XY chain with the Dzyaloshinskii–Moriya (DM) interaction using the quantum renormalization-group (QRG) method. In thermodynamic limit, like the entanglement, the tripartite discord exhibits the quantum phase transition (QPT) between the spin-fluid and the Neel phases. The effect of the DM interaction and the anisotropy on the features of the tripartite quantum discord has been probed. It is noted that the DM interaction brings the critical point earlier and affects heavily with the size of the system. Moreover, the sys

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14

TOMASELLO, BRUNO, DAVIDE ROSSINI, ALIOSCIA HAMMA, and LUIGI AMICO. "QUANTUM DISCORD IN A SPIN SYSTEM WITH SYMMETRY BREAKING." International Journal of Modern Physics B 26, no. 27n28 (2012): 1243002. http://dx.doi.org/10.1142/s0217979212430023.

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We analyze the quantum discordQ throughout the low temperature phase diagram of the quantum XY model in transverse field. We first focus on the T = 0 order–disorder quantum phase transition QPT both in the symmetric ground state and in the symmetry broken one. Beside it, we highlight how Q displays clear anomalies also at a noncritical value of the control parameter inside the ordered phase, where the ground state is completely factorized. We evidence how the phenomenon is in fact of collective nature and displays universal features. We also study Q at finite temperature. We show that, close t

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15

Joyia, Wajid Hussain. "Quantum correlations in Heisenberg XY spin-1 and spin-1/2 model with Dzyaloshinskii–Moriya interactions." International Journal of Quantum Information 13, no. 05 (2015): 1550035. http://dx.doi.org/10.1142/s0219749915500355.

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We study the quantum correlations in a spin-1/2 (qubit) and spin-1 (qutrit) Heisenberg XY model separately, based on quantum discord (QD) and measurement-induced disturbance (MID) respectively. We find the evidence of the first- and second-order quantum phase transition (QPT) in both spin-1/2 and spin-1 systems. The effect of the temperature, magnetic field and Dzyaloshinskii–Moriya (DM) interactions on QPT and quantum correlation are also investigated. Finally, we observed that the QD and MID are not only vigorous for higher spin systems but also more robust than entanglement.

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16

Varma, Anant Vijay, Anvesh Raja Kovela, Prasanta K. Panigrahi, and Bhavesh Chouhan. "Entanglement and quantum phase transition in topological insulators." Modern Physics Letters B 33, no. 32 (2019): 1950394. http://dx.doi.org/10.1142/s0217984919503949.

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Presence of entangled states is explicitly shown in a topological insulator (TI) [Formula: see text]. The surface and bulk state are found to have different structures of entanglement. The surface states live as maximally entangled states in a four-dimensional subspace of total Hilbert space (spin, orbital, space). However, bulk states are entangled in the whole Hilbert space. Bulk states are found to be entangled maximally by controlled injection of electrons with momentum only along the [Formula: see text]-direction. At quantum phase transition (QPT) point, both states become maximally entan

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17

Jafarizadeh, M. A., N. Fouladi, M. Ghapanvari, and H. Fathi. "Phase transition studies of the odd-mass 123−135Xe isotopes based on SU(1,1) algebra in IBFM." International Journal of Modern Physics E 25, no. 08 (2016): 1650048. http://dx.doi.org/10.1142/s0218301316500488.

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In this paper, we have investigated the positive-parity states in the odd-mass transitional [Formula: see text]Xe isotopes within the framework of the interacting boson–fermion model. Two solvable extended transitional Hamiltonians which are based on SU(1,1) algebra are employed to provide an investigation of quantum phase transition (QPT) between the spherical and deformed gamma — unstable shapes along the chain of Xe isotopes. The low-states energy spectra and B(E2) values for these nuclei have been calculated and compared with the experimental data. The predicted excitation energies and B(E

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18

Wang, Qian, and Wen-Ge Wang. "Probing quantum critical points by Fisher information at finite temperature." Modern Physics Letters B 31, no. 10 (2017): 1750107. http://dx.doi.org/10.1142/s021798491750107x.

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We study the quantum Fisher information (QFI) of a one-dimensional anisotropic XY chain in a transverse field with three-spin interaction. It is shown that the QFI, computed at a finite temperature, can be used to estimate the critical point (CP) of the quantum phase transition (QPT) at zero temperature. The accuracy of the obtained result depends on both the anisotropy parameter of the chain and the local observable used in the computation of QFI.

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19

Lavagna, M. "Quantum phase transitions." Philosophical Magazine B 81, no. 10 (2001): 1469–83. http://dx.doi.org/10.1080/13642810108208565.

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20

Sachdev, Subir. "Quantum phase transitions." Physics World 12, no. 4 (1999): 33–38. http://dx.doi.org/10.1088/2058-7058/12/4/23.

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21

Stishov, Sergei M. "Quantum phase transitions." Physics-Uspekhi 47, no. 8 (2004): 789–95. http://dx.doi.org/10.1070/pu2004v047n08abeh001850.

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22

Stishov, Sergei M. "Quantum phase transitions." Uspekhi Fizicheskih Nauk 174, no. 8 (2004): 853. http://dx.doi.org/10.3367/ufnr.0174.200408b.0853.

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23

Vojta, Matthias. "Quantum phase transitions." Reports on Progress in Physics 66, no. 12 (2003): 2069–110. http://dx.doi.org/10.1088/0034-4885/66/12/r01.

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24

Young, A. P. "Quantum phase transitions." Nuclear Physics B - Proceedings Supplements 42, no. 1-3 (1995): 201–9. http://dx.doi.org/10.1016/0920-5632(95)00203-l.

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25

Muñoz, C., M. Gaeta, R. Gomez, and A. B. Klimov. "Picturing quantum phase transitions." Physics Letters A 383, no. 2-3 (2019): 141–47. http://dx.doi.org/10.1016/j.physleta.2018.10.030.

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26

Sondhi, S. L., S. M. Girvin, J. P. Carini, and D. Shahar. "Continuous quantum phase transitions." Reviews of Modern Physics 69, no. 1 (1997): 315–33. http://dx.doi.org/10.1103/revmodphys.69.315.

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27

Vojta, Matthias. "Impurity quantum phase transitions." Philosophical Magazine 86, no. 13-14 (2006): 1807–46. http://dx.doi.org/10.1080/14786430500070396.

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28

Schützhold, Ralf. "Dynamical Quantum Phase Transitions." Journal of Low Temperature Physics 153, no. 5-6 (2008): 228–43. http://dx.doi.org/10.1007/s10909-008-9831-5.

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29

Jafarizadeh, M. A., A. Jalili Majarshin, and N. Fouladi. "Simultaneous description of low-lying positive and negative parity states in spd, sdf and spdf interacting boson model." International Journal of Modern Physics E 25, no. 11 (2016): 1650089. http://dx.doi.org/10.1142/s0218301316500890.

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In order to investigate negative parity states, it is necessary to consider negative parity-bosons additionally to the usual [Formula: see text]- and [Formula: see text]-bosons. The dipole and octupole degrees of freedom are essential to describe the observed low-lying collective states with negative parity. An extended interacting boson model (IBM) that describes pairing interactions among s, p, d and f-boson based on affine [Formula: see text] Lie algebra in the quantum phase transition (QPT) field, such as spd-IBM, sdf-IBM and spdf-IBM, is composed based on algebraic structure. In this pape

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30

Iachello, Francesco. "Symmetry and phase transitions: Quantum phase transitions in algebraic models." Journal of Physics: Conference Series 237 (June 1, 2010): 012014. http://dx.doi.org/10.1088/1742-6596/237/1/012014.

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31

Chubukov, Andrey V., Subir Sachdev, and T. Senthil. "Quantum phase transitions in frustrated quantum antiferromagnets." Nuclear Physics B 426, no. 3 (1994): 601–43. http://dx.doi.org/10.1016/0550-3213(94)90023-x.

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32

Continentino, Mucio A., and André S. Ferreira. "Quantum first-order phase transitions." Physica A: Statistical Mechanics and its Applications 339, no. 3-4 (2004): 461–68. http://dx.doi.org/10.1016/j.physa.2004.03.014.

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33

Shukla, P. K., and K. Avinash. "Phase transitions in quantum plasmas." Physics Letters A 376, no. 16 (2012): 1352–55. http://dx.doi.org/10.1016/j.physleta.2012.03.002.

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34

Carollo, Angelo, Davide Valenti, and Bernardo Spagnolo. "Geometry of quantum phase transitions." Physics Reports 838 (January 2020): 1–72. http://dx.doi.org/10.1016/j.physrep.2019.11.002.

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35

Meyer-Ortmanns, Hildegard. "Phase transitions in quantum chromodynamics." Reviews of Modern Physics 68, no. 2 (1996): 473–598. http://dx.doi.org/10.1103/revmodphys.68.473.

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36

Bausch, Johannes, Toby S. Cubitt, Angelo Lucia, David Perez-Garcia, and Michael M. Wolf. "Size-driven quantum phase transitions." Proceedings of the National Academy of Sciences 115, no. 1 (2017): 19–23. http://dx.doi.org/10.1073/pnas.1705042114.

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Can the properties of the thermodynamic limit of a many-body quantum system be extrapolated by analyzing a sequence of finite-size cases? We present models for which such an approach gives completely misleading results: translationally invariant, local Hamiltonians on a square lattice with open boundary conditions and constant spectral gap, which have a classical product ground state for all system sizes smaller than a particular threshold size, but a ground state with topological degeneracy for all system sizes larger than this threshold. Starting from a minimal case with spins of dimension 6

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37

Greentree, Andrew D., Charles Tahan, Jared H. Cole, and Lloyd C. L. Hollenberg. "Quantum phase transitions of light." Nature Physics 2, no. 12 (2006): 856–61. http://dx.doi.org/10.1038/nphys466.

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38

Continentino, M. A., and A. S. Ferreira. "First-order quantum phase transitions." Journal of Magnetism and Magnetic Materials 310, no. 2 (2007): 828–34. http://dx.doi.org/10.1016/j.jmmm.2006.10.765.

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39

Müller, H. M., and S. E. Koonin. "Phase transitions in quantum dots." Physical Review B 54, no. 20 (1996): 14532–39. http://dx.doi.org/10.1103/physrevb.54.14532.

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40

Gehring, G. A. "Pressure-induced quantum phase transitions." EPL (Europhysics Letters) 82, no. 6 (2008): 60004. http://dx.doi.org/10.1209/0295-5075/82/60004.

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41

Zhou, Huan-Qiang, and John Paul Barjaktarevič. "Fidelity and quantum phase transitions." Journal of Physics A: Mathematical and Theoretical 41, no. 41 (2008): 412001. http://dx.doi.org/10.1088/1751-8113/41/41/412001.

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42

Cejnar, Pavel, Pavel Stránský, Michal Macek, and Michal Kloc. "Excited-state quantum phase transitions." Journal of Physics A: Mathematical and Theoretical 54, no. 13 (2021): 133001. http://dx.doi.org/10.1088/1751-8121/abdfe8.

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43

Pázmándi, Ferenc, and Zbigniew Domański. "Quantum Phase Transitions inXYSpin Models." Physical Review Letters 74, no. 12 (1995): 2363–66. http://dx.doi.org/10.1103/physrevlett.74.2363.

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44

Khan, Ayan, Saurabh Basu, and B. Tanatar. "Investigating dirty crossover through fidelity susceptibility and density of states." International Journal of Modern Physics B 28, no. 14 (2014): 1450083. http://dx.doi.org/10.1142/s0217979214500830.

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We investigate the BCS–BEC crossover in an ultracold atomic gas in the presence of disorder. The disorder is incorporated in the mean-field formalism through Gaussian fluctuations. We observe evolution to an asymmetric line-shape of fidelity susceptibility (FS) as a function of interaction coupling with increasing disorder strength which may point to an impending quantum phase transition (QPT). The asymmetric line-shape is further analyzed using the statistical tools of skewness and kurtosis. We extend our analysis to density of states (DOS) for a better understanding of the crossover in the d

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45

Shaginyan, V. R., J. G. Han, and J. Lee. "Fermion condensation quantum phase transition versus conventional quantum phase transitions." Physics Letters A 329, no. 1-2 (2004): 108–15. http://dx.doi.org/10.1016/j.physleta.2004.06.065.

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46

Lu, Xiao-Ming, and Xiaoguang Wang. "Operator quantum geometric tensor and quantum phase transitions." EPL (Europhysics Letters) 91, no. 3 (2010): 30003. http://dx.doi.org/10.1209/0295-5075/91/30003.

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47

Rotter, Ingrid. "Dynamical Phase Transitions in Quantum Systems." Journal of Modern Physics 01, no. 05 (2010): 303–11. http://dx.doi.org/10.4236/jmp.2010.15043.

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48

Heyl, Markus. "Dynamical quantum phase transitions: a review." Reports on Progress in Physics 81, no. 5 (2018): 054001. http://dx.doi.org/10.1088/1361-6633/aaaf9a.

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49

ZHU, SHI-LIANG. "GEOMETRIC PHASES AND QUANTUM PHASE TRANSITIONS." International Journal of Modern Physics B 22, no. 06 (2008): 561–81. http://dx.doi.org/10.1142/s0217979208038855.

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Quantum phase transition is one of the main interests in the field of condensed matter physics, while geometric phase is a fundamental concept and has attracted considerable interest in the field of quantum mechanics. However, no relevant relation was recognized before recent work. In this paper, we present a review of the connection recently established between these two interesting fields: investigations in the geometric phase of the many-body systems have revealed the so-called "criticality of geometric phase", in which the geometric phase associated with the many-body ground state exhibits

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50

GU, SHI-JIAN. "FIDELITY APPROACH TO QUANTUM PHASE TRANSITIONS." International Journal of Modern Physics B 24, no. 23 (2010): 4371–458. http://dx.doi.org/10.1142/s0217979210056335.

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We review the quantum fidelity approach to quantum phase transitions in a pedagogical manner. We try to relate all established but scattered results on the leading term of the fidelity into a systematic theoretical framework, which might provide an alternative paradigm for understanding quantum critical phenomena. The definition of the fidelity and the scaling behavior of its leading term, as well as their explicit applications to the one-dimensional transverse-field Ising model and the Lipkin–Meshkov–Glick model, are introduced at the graduate-student level. Besides, we survey also other type

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