scholarly journals Influence of weak disorder on the dynamical quantum phase transitions in the anisotropic XY chain

2020 ◽  
Vol 102 (1) ◽  
Author(s):  
Kaiyuan Cao ◽  
Wenwen Li ◽  
Ming Zhong ◽  
Peiqing Tong
Keyword(s):  
Phase Transitions ◽  
Quantum Phase Transitions ◽  
Quantum Phase ◽  
Weak Disorder ◽  
Xy Chain

scholarly journals Topological classification of dynamical quantum phase transitions in the xy chain

2020 ◽  
Vol 10 (1) ◽  
Author(s):  
Sergio Porta ◽  
Fabio Cavaliere ◽  
Maura Sassetti ◽  
Niccolò Traverso Ziani
Keyword(s):  
Phase Transitions ◽  
Quantum Phase Transitions ◽  
Quantum Phase ◽  
Topological Classification ◽  
Xy Chain

Quantum correlated coherence and Hellinger distance in the critical systems

2020 ◽  
pp. 2150002
Author(s):  
Biaoliang Ye ◽  
Zhanjun Zhang
Keyword(s):  
Phase Transitions ◽  
Quantum Phase Transitions ◽  
Hellinger Distance ◽  
Numerical Results ◽  
Quantum Phase ◽  
Critical Systems ◽  
Xxz Model ◽  
Xy Chain ◽  
Quantum Critical

In this paper, we explore the quantum phase transitions in the XY chain and the XXZ model. The quantum correlated coherence has been introduced by Tan and Jeong [Phys. Rev. Lett. 121, 220401 (2018)]. We utilize the quantum correlated coherence to investigate the quantum critical systems. We also demonstrate the Hellinger distance which shows the quantum critical behaviors. The numerical results are presented and analyzed in details.

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

scholarly journals Interaction between Different Kinds of Quantum Phase Transitions

2021 ◽  
Vol 3 (2) ◽  
pp. 253-261
Author(s):  
Angel Ricardo Plastino ◽  
Gustavo Luis Ferri ◽  
Angelo Plastino
Keyword(s):  
Phase Transitions ◽  
Nuclear Physics ◽  
Body Problem ◽  
Quantum Phase Transitions ◽  
Quantum Phase ◽  
Exactly Solvable Models ◽  
Solvable Models ◽  
Many Body ◽  
Pairing Interaction ◽  
Exactly Solvable

We employ two different Lipkin-like, exactly solvable models so as to display features of the competition between different fermion–fermion quantum interactions (at finite temperatures). One of our two interactions mimics the pairing interaction responsible for superconductivity. The other interaction is a monopole one that resembles the so-called quadrupole one, much used in nuclear physics as a residual interaction. The pairing versus monopole effects here observed afford for some interesting insights into the intricacies of the quantum many body problem, in particular with regards to so-called quantum phase transitions (strictly, level crossings).

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