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PERTURBATION APPROACH FOR THE LOCALIZATION TRANSITION IN THE DISSIPATIVE 2-STATE SYSTEM
ZHANG, GM; CHEN, H; WU, X
Corresponding AuthorZHANG, GM()
1993
Source PublicationCOMMUNICATIONS IN THEORETICAL PHYSICS
ISSN0253-6102
Volume19Issue:2Pages:139-144
AbstractAnalysis of a dissipative two-state system at zero temperature shows that the model Hamiltonian may be exactly reduced to a modified quantum sine-Gordon model, which describes the effective interactions between the low-frequency phonons under coupling with a tunneling system. Directly considering the infrared divergence encountered in the conventional perturbation treatment, we have developed a new perturbation approach for the effective Hamiltonian, and derived the exact critical conditions for the localization transition. In the critical regime, a gap will be opened near zero momentum in the elementary excitation spectrum of the low-frequency phonons, and the corresponding ground state wave function is found to be a pairing quasi-particle state, analogous to the BCS superconducting state.
Indexed BySCI
Language英语
WOS Research AreaPhysics
WOS SubjectPhysics, Multidisciplinary
WOS IDWOS:A1993LG50100002
PublisherHUAZHONG UNIV SCI TECH PRESS
Citation statistics
Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/126417
Collection中国科学院金属研究所
Corresponding AuthorZHANG, GM
Affiliation1.CCAST,WORLD LAB,CTR THEORET PHYS,BEIJING 100080,PEOPLES R CHINA
2.CHINESE ACAD SCI,INT CTR MAT PHYS,SHANGHAI,PEOPLES R CHINA
Recommended Citation
GB/T 7714
ZHANG, GM,CHEN, H,WU, X. PERTURBATION APPROACH FOR THE LOCALIZATION TRANSITION IN THE DISSIPATIVE 2-STATE SYSTEM[J]. COMMUNICATIONS IN THEORETICAL PHYSICS,1993,19(2):139-144.
APA ZHANG, GM,CHEN, H,&WU, X.(1993).PERTURBATION APPROACH FOR THE LOCALIZATION TRANSITION IN THE DISSIPATIVE 2-STATE SYSTEM.COMMUNICATIONS IN THEORETICAL PHYSICS,19(2),139-144.
MLA ZHANG, GM,et al."PERTURBATION APPROACH FOR THE LOCALIZATION TRANSITION IN THE DISSIPATIVE 2-STATE SYSTEM".COMMUNICATIONS IN THEORETICAL PHYSICS 19.2(1993):139-144.
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