Quantum phase transitions and thermodynamics of quantum antiferromagnets with next-nearest-neighbor couplings

2003 ◽  
Vol 68 (14) ◽  
Author(s):  
A. A. Zvyagin ◽  
A. Klümper
Keyword(s):  
Phase Transitions ◽  
Nearest Neighbor ◽  
Quantum Phase Transitions ◽  
Quantum Phase ◽  
Quantum Antiferromagnets

scholarly journals Quantum phase transitions of a square-lattice Heisenberg antiferromagnet with two kinds of nearest-neighbor bonds: A high-order coupled-cluster treatment

2000 ◽  
Vol 61 (21) ◽  
pp. 14607-14615 ◽  
Author(s):  
Sven E. Krüger ◽  
Johannes Richter ◽  
Jörg Schulenburg ◽  
Damian J. J. Farnell ◽  
Raymond F. Bishop
Keyword(s):  
Phase Transitions ◽  
Nearest Neighbor ◽  
Quantum Phase Transitions ◽  
High Order ◽  
Quantum Phase ◽  
Square Lattice ◽  
Coupled Cluster ◽  
Heisenberg Antiferromagnet

Quantum phase transitions in frustrated quantum antiferromagnets

1994 ◽  
Vol 426 (3) ◽  
pp. 601-643 ◽  
Author(s):  
Andrey V. Chubukov ◽  
Subir Sachdev ◽  
T. Senthil
Keyword(s):  
Phase Transitions ◽  
Quantum Phase Transitions ◽  
Quantum Phase ◽  
Quantum Antiferromagnets

scholarly journals Quantum correlations in critical XXZ system and LMG model

2018 ◽  
Vol 16 (03) ◽  
pp. 1850029 ◽  
Author(s):  
Biao-Liang Ye ◽  
Bo Li ◽  
Xianqing Li-Jost ◽  
Shao-Ming Fei
Keyword(s):  
Phase Transitions ◽  
Nearest Neighbor ◽  
Quantum Phase Transitions ◽  
Quantum Correlations ◽  
Quantum Phase ◽  
Trace Distance ◽  
Quantum Uncertainty ◽  
Hartree Fock ◽  
Local Quantum Uncertainty ◽  
Local Quantum

We investigate the quantum phase transitions for the [Formula: see text] spin-1/2 chains via the quantum correlations between the nearest and next-to-nearest neighbor spins characterized by negativity, information deficit, trace distance discord and local quantum uncertainty. It is shown that all these correlations exhibit the quantum phase transitions at [Formula: see text]. However, only information deficit and local quantum uncertainty can demonstrate quantum phase transitions at [Formula: see text]. The analytical and numerical behaviors of the quantum correlations for the [Formula: see text] system are presented. We also consider quantum correlations in the Hartree–Fock ground state of the Lipkin–Meshkov–Glick (LMG) model.

Quantum phase transitions

2004 ◽  
Vol 174 (8) ◽  
pp. 853 ◽  
Author(s):  
Sergei M. Stishov
Keyword(s):  
Phase Transitions ◽  
Quantum Phase Transitions ◽  
Quantum Phase

scholarly journals Magnetic Field- and Pressure-Induced Quantum Phase Transitions in NH4CuCl3

2005 ◽  
Vol 159 ◽  
pp. 241-245 ◽  
Author(s):  
Masashi Fujisawa ◽  
Budhy Kurniawan ◽  
Toshio Ono ◽  
Hidekazu Tanaka
Keyword(s):  
Magnetic Field ◽  
Phase Transitions ◽  
Quantum Phase Transitions ◽  
Quantum Phase
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