Parity Symmetry and Parity Breaking in the Quantum Rabi Model with Addition of Ising Interaction

We explore the possibility to generate new parity symmetry in the quantum Rabi model after a bias is introduced. In contrast to a mathematical treatment in a previous publication [J. Phys. A 46（2013） 265302], we consider a physically realistic method by involving an additional spin into the quantum...

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Published inCommunications in theoretical physics Vol. 63; no. 4; pp. 510 - 514
Main Author 王琼 贺志 姚春梅
Format Journal Article
LanguageEnglish
Published 01.04.2015
Subjects
Bias
Degrees of freedom
Feasibility
Ising model
Mathematical analysis
Mathematical models
Parity
Symmetry
出版物
奇偶对称性
数学处理
旋进
模型实验
物理方法
相互作用
量子
Online AccessGet full text
ISSN0253-6102
1572-9494
DOI10.1088/0253-6102/63/4/510

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Summary:We explore the possibility to generate new parity symmetry in the quantum Rabi model after a bias is introduced. In contrast to a mathematical treatment in a previous publication [J. Phys. A 46（2013） 265302], we consider a physically realistic method by involving an additional spin into the quantum Rabi model to couple with the original spin by an Ising interaction, and then the parity symmetry is broken as well as the scaling behavior of the ground state by introducing a bias. The rule can be found that the parity symmetry is broken by introducing a bias and then restored by adding new degrees of freedom. Experimental feasibility of realizing the models under discussion is investigated.
Bibliography:We explore the possibility to generate new parity symmetry in the quantum Rabi model after a bias is introduced. In contrast to a mathematical treatment in a previous publication [J. Phys. A 46（2013） 265302], we consider a physically realistic method by involving an additional spin into the quantum Rabi model to couple with the original spin by an Ising interaction, and then the parity symmetry is broken as well as the scaling behavior of the ground state by introducing a bias. The rule can be found that the parity symmetry is broken by introducing a bias and then restored by adding new degrees of freedom. Experimental feasibility of realizing the models under discussion is investigated.
WANG Qiong ,HE Zhi ,YAO Chun-Mei （ College of Physics and Electronics, Hunan University of Arts and Science, Changde 415000, China）
parity symmetry,parity breaking,Rabi model,scaling behavior
11-2592/O3
ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 23
ISSN:0253-6102
1572-9494
DOI:10.1088/0253-6102/63/4/510