Detection of multi-spin interaction of a quenched XY chain by the average work and the relative entropyProject supported by the National Natural Science Foundation of China (Grant No. 11304230), China Postdoctoral Science Foundation Funded Project (Grant No. 2014M562387), the Fund of the State Key Laboratory of Intense Pulsed Radiation Simulation and Effect (Grant No. SKLIPR1908).,Chinese Physics B

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Detection of multi-spin interaction of a quenched XY chain by the average work and the relative entropyProject supported by the National Natural Science Foundation of China (Grant No. 11304230), China Postdoctoral Science Foundation Funded Project (Grant No. 2014M562387), the Fund of the State Key Laboratory of Intense Pulsed Radiation Simulation and Effect (Grant No. SKLIPR1908).
Chinese Physics B ( IF 1.7 ) Pub Date : 2021-09-03 , DOI: 10.1088/1674-1056/abeef5
Xiu-Xing Zhang ₁ , Fang-Jv Li ₁ , Kai Wang ₁ , Jing Xue ₁ , Guang-Wen Huo ₁ , Ai-Ping Fang ₂ , Hong-Rong Li ₂

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We investigate the nonequilibrium thermodynamics of a quenched XY spin chain with multi-spin interaction in a transverse field. The analytical expressions of both the average work and the relative entropy are obtained under different quenching parameters. The influences of the system parameters on the nonequilibrium thermodynamics are investigated. We find that at finite temperature the critical phenomenon induced by the multi-spin interaction and the external field can be revealed by the properties of the system nonequilibrium thermodynamics. In addition, our results indicate that the average work and the relative entropy can be used to detect both the existence and strength of the multi-spin interaction in the nonequlibrium system.

更新日期：2021-09-03

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