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Physical Review Letters, ISSN 0031-9007, 03/2013, Volume 110, Issue 13, p. 135704
A phase transition indicates a sudden change in the properties of a large system. For temperature-driven phase transitions this is related to nonanalytic... 
PHYSICS, MULTIDISCIPLINARY | STATISTICAL-MECHANICS | XY-MODEL
Journal Article
Physical Review Letters, ISSN 0031-9007, 06/2011, Volume 106, Issue 22, p. 227203
We consider the time evolution of observables in the transverse-field Ising chain after a sudden quench of the magnetic field. We provide exact analytical... 
CONDENSATE | STATISTICAL-MECHANICS | XY-MODEL | PHYSICS, MULTIDISCIPLINARY
Journal Article
Physical Review Letters, ISSN 0031-9007, 02/2012, Volume 108, Issue 7, p. 077206
We consider the nonequilibrium evolution in the spin-1/2 XXZ Heisenberg chain for fixed magnetization after a local quantum quench. This model is equivalent to... 
DYNAMICS | SYSTEMS | THERMALIZATION | PHYSICS, MULTIDISCIPLINARY | XY MODEL
Journal Article
Physical Review Letters, ISSN 0031-9007, 10/2017, Volume 119, Issue 15
We suggest that a randomization of the pseudodipolar interaction in the spin-orbit-generated low-energy Hamiltonian of YbMgGaO4 due to an inhomogeneous charge... 
TRANSITION | ORDER | PHASE | QUANTUM ANTIFERROMAGNETS | PHYSICS, MULTIDISCIPLINARY | XY MODEL | MAGNETIC-FIELD | GROUND-STATE PROPERTIES | LATTICE | TRIANGULAR HEISENBERG-ANTIFERROMAGNET | Physics
Journal Article
EPL, ISSN 0295-5075, 08/2019, Volume 127, Issue 3, p. 30003
We investigate bipartite entanglement in random quantum XY models at equilibrium. Depending on the intrinsic time scales associated with equilibration of the... 
STATISTICAL-MECHANICS | SYSTEMS | XY-MODEL | PHYSICS, MULTIDISCIPLINARY
Journal Article
Physical Review Letters, ISSN 0031-9007, 08/2018, Volume 121, Issue 9, p. 095302
We study the phase ordering of parametrically and incoherently driven microcavity polaritons after an infinitely rapid quench across the critical region. We... 
PHYSICS, MULTIDISCIPLINARY | PHASE-ORDERING KINETICS | XY MODEL | Physics - Quantum Gases
Journal Article
Journal of Physics: Condensed Matter, ISSN 0953-8984, 06/1998, Volume 10, Issue 22, pp. 4707 - 4754
Journal Article
Physical Review Letters, ISSN 0031-9007, 06/2014, Volume 112, Issue 22, p. 220401
We consider a quantum quench in a finite system of length L described by a 1 + 1-dimensional conformal field theory (CFT), of central charge c, from a state... 
STATISTICAL-MECHANICS | BOUNDARY | XY-MODEL | PHYSICS, MULTIDISCIPLINARY
Journal Article
JOURNAL OF PHYSICS A-MATHEMATICAL AND THEORETICAL, ISSN 1751-8113, 07/2019, Volume 52, Issue 28, p. 284001
The ferromagnetic XY model on sparse random graphs in a randomly oriented field is analyzed via the belief propagation algorithm. At variance with the fully... 
replica symmetry breaking | continuous models | random field XY model | INSTABILITY | PHYSICS, MULTIDISCIPLINARY | SYSTEMS | STATE | XY model | PHYSICS, MATHEMATICAL | disordered systems | spin glass | Bethe lattice
Journal Article
Physical Review A - Atomic, Molecular, and Optical Physics, ISSN 1050-2947, 2002, Volume 66, Issue 3, pp. 321101 - 321114
What entanglement is present in naturally occurring physical systems at thermal equilibrium? Most such systems are intractable and it is desirable to study... 
STATISTICAL-MECHANICS | STATE | XY-MODEL | OPTICS | PURIFICATION | PHYSICS, ATOMIC, MOLECULAR & CHEMICAL
Journal Article
Physical Review B, ISSN 1098-0121, 2012, Volume 85, Issue 21
We analyze the thermalization properties and the validity of the eigenstate thermalization hypothesis in a generic class of quantum Hamiltonians where the... 
STATISTICAL-MECHANICS | PHYSICS, CONDENSED MATTER | SYSTEMS | THERMALIZATION | XY MODEL
Journal Article
Physical Review Letters, ISSN 0031-9007, 03/2009, Volume 102, Issue 12, p. 127204
We study the nonequilibrium dynamics of the quantum Ising model following an abrupt quench of the transverse field. We focus on the on-site autocorrelation... 
ISING-MODEL | STATISTICAL-MECHANICS | PHYSICS, MULTIDISCIPLINARY | TRANSVERSE FIELD | XY MODEL
Journal Article
Physical Review B - Condensed Matter and Materials Physics, ISSN 1098-0121, 04/2014, Volume 89, Issue 13
We investigate the scaling and spatial distribution of genuine multiparticle entanglement in three- and four-spin reduced states of the one-dimensional XY... 
STATISTICAL-MECHANICS | PHYSICS, CONDENSED MATTER | XY-MODEL | AREA | FIELD | SYSTEMS | ENTROPY
Journal Article
Physical Review B - Condensed Matter and Materials Physics, ISSN 1098-0121, 10/2010, Volume 82, Issue 14
We study the dynamics of the quantum Ising chain following a zero-temperature quench of the transverse field strength. Focusing on the behavior of two-point... 
GASES | STATISTICAL-MECHANICS | PHYSICS, CONDENSED MATTER | XY MODEL | FIELD-THEORY | TRANSVERSE ISING CHAIN | SYSTEMS | ATOMS | STATE | PHYSICS | OPTICAL LATTICES
Journal Article
Journal of Physics Condensed Matter, ISSN 0953-8984, 2019, Volume 21, Issue 24, p. 245401
Phase transitions in quantum systems, including symmetry breaking and topological types, always associate with gap closing and opening. We analyze the... 
XY model | Scaling behavior | Majorana representation | Winding number | Phase transition | scaling behavior | PHYSICS, CONDENSED MATTER | phase transition | winding number
Journal Article
Nature Communications, ISSN 2041-1723, 2012, Volume 3, Issue 1, p. 812
The observation that concepts from quantum information has generated many alternative indicators of quantum phase transitions hints that quantum phase... 
MATRIX | STATES | XY-MODEL | ENTANGLEMENT | SPINS | MULTIDISCIPLINARY SCIENCES | SYSTEMS | TRANSFORMATIONS | Physics - Quantum Physics
Journal Article
Physical Review B - Condensed Matter and Materials Physics, ISSN 1098-0121, 07/2008, Volume 78, Issue 2
Motivated by recent neutron scattering experiments, we study the ordering of spins in the iron-based superconductors LaFeAs(O1-xFx), assuming them in proximity... 
PHYSICS, CONDENSED MATTER | QUANTUM ANTIFERROMAGNETS | XY-MODEL | PHASE-TRANSITIONS | LARGE-N EXPANSION | SYSTEMS | LAYERED SUPERCONDUCTOR | 2 DIMENSIONS
Journal Article
Physical Review B - Condensed Matter and Materials Physics, ISSN 1098-0121, 12/2008, Volume 78, Issue 22
Quantum phase transitions of the transverse Ising and antiferromagnetic XXZ spin S=1/2 chains are studied using quantum discord. Quantum discord allows the... 
STATISTICAL-MECHANICS | PHYSICS, CONDENSED MATTER | antiferromagnetism | XY-MODEL | ENTANGLEMENT | quantum entanglement | critical points | REGION | XXZ CHAIN | Ising model | NEIGHBOR CORRELATION-FUNCTIONS | SYSTEMS | phase transformations | spin systems | EQUATION | Physics - Strongly Correlated Electrons
Journal Article
Journal of Statistical Mechanics: Theory and Experiment, ISSN 1742-5468, 2016, Volume 2016, Issue 6, p. 64002
Journal Article