Density matrix Loschmidt echo and quantum phase transitions
Data(s) |
2007
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Resumo |
We introduce the concept of the Loschmidt echo (LE) to the space of the reduced density matrix of spin and fermionic systems to study the density matrix LEs (DMLEs) of the one-dimensional extended Hubbard model and the transverse field Ising model. Our results show that the DMLEs are remarkably influenced by the criticality of the system, and the method is a convenient way to study quantum phase transitions. |
Identificador | |
Idioma(s) |
英语 |
Fonte |
Li, YC (Li, Yan-Chao); Li, SS (Li, Shu-Shen) .Density matrix Loschmidt echo and quantum phase transitions ,PHYSICAL REVIEW A,SEP 2007,76 (3):Art.No.032117 |
Palavras-Chave | #半导体物理 #STATISTICAL-MECHANICS |
Tipo |
期刊论文 |