First-Order Phase Transitions in Renormalization-Group Theory

1975 ◽  
Vol 35 (8) ◽  
pp. 477-479 ◽  
Author(s):  
B. Nienhuis ◽  
M. Nauenberg
Keyword(s):  
Renormalization Group ◽  
Group Theory ◽  
Phase Transitions ◽  
Renormalization Group Theory ◽  
First Order ◽  
First Order Phase

Renormalization of quantum deficit and monogamy relation in the Heisenberg XXZ model

2016 ◽  
Vol 16 (9&10) ◽  
pp. 835-844
Author(s):  
Meng Qin ◽  
Xin Zhang ◽  
Zhong-Zhou Ren
Keyword(s):  
Renormalization Group ◽  
Group Theory ◽  
Phase Transitions ◽  
Spin Chain ◽  
Quantum Correlation ◽  
Quantum Phase Transitions ◽  
Dynamical Behavior ◽  
Renormalization Group Theory ◽  
Xxz Model ◽  
Heisenberg Xxz Model

In this study, the dynamical behavior of quantum deficit and monogamy relation in the Heisenberg XXZ model is investigated by implementing quantum renormalization group theory. The results demonstrate that the quantum deficit can be used to capture the quantum phase transitions point and show scaling behavior with the spin chain size increasing. It was also found that the critical exponent has no change when varying measure from entanglement to quantum correlation. The monogamy relation is influenced by the steps of quantum renormalization group and the ways of splitting the block states. Furthermore, the monogamy relation of generalized W state also is given by means of quantum deficit.

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