Lee-Yang zeros and two-time spin correlation function

被引：5
|
作者：
Gnatenko, Kh. P. [1 ]
Kargol, A. [2 ]
Tkachuk, V. M. [1 ]
机构：
[1] Ivan Franko Natl Univ Lviv, Dept Theoret Phys, 12 Drahomanov St, UA-79005 Lvov, Ukraine
[2] Uniwersytet Marii Curie Sklodowskiej, Inst Matemat, PL-20031 Lublin, Poland
来源：
PHYSICA A-STATISTICAL MECHANICS AND ITS APPLICATIONS | 2018年 / 509卷
关键词：
Lee-Yang zeros; Two-time correlation function; Spin system; PARTITION-FUNCTION ZEROS; PHASE-TRANSITIONS; CLASSIFICATION; MODEL;
D O I：
10.1016/j.physa.2018.06.103
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
The two-time correlation function for probe spin interacting with spin system (bath) is studied. We show that zeros of this function correspond to zeros of partition function of spin system in complex magnetic field. The obtained relation gives new possibility to observe the Lee-Yang zeros experimentally. Namely, we show that measuring of the time dependence of correlation function allows direct experimental observation of the Lee-Yang zeros. (C) 2018 Elsevier B.V. All rights reserved.
引用
收藏
页码：1095 / 1101
页数：7
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