| PERTURBATION APPROACH FOR THE LOCALIZATION TRANSITION IN THE DISSIPATIVE 2-STATE SYSTEM | |
| ZHANG, GM; CHEN, H; WU, X | |
| Corresponding Author | ZHANG, GM() |
| 1993 | |
| Source Publication | COMMUNICATIONS IN THEORETICAL PHYSICS
 |
| ISSN | 0253-6102 |
| Volume | 19Issue:2Pages:139-144 |
| Abstract | Analysis 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 By | SCI |
| Language | 英语 |
| WOS Research Area | Physics |
| WOS Subject | Physics, Multidisciplinary |
| WOS ID | WOS:A1993LG50100002 |
| Publisher | HUAZHONG UNIV SCI TECH PRESS |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/126417 |
| Collection | 中国科学院金属研究所 |
| Corresponding Author | ZHANG, GM |
| Affiliation | 1.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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