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STRUCTURE PHASE-TRANSITIONS OF THE (D+1)-DIMENSIONAL DOUBLE SINE-GORDON FIELD-THEORY
ZHU, YJ; LOU, SY; ZHU, YJ , NINGBO NORMAL COLL,DEPT PHYS,NINGBO 315211,PEOPLES R CHINA.
1995
发表期刊COMMUNICATIONS IN THEORETICAL PHYSICS
ISSN0253-6102
卷号23期号:1页码:83-92
摘要Using the thermal coherent state approach, we investigate the finite temperature quantum double sine-Gordon (DsG) field theory. From the stability conditions of the vacuum states of effective potential, the exact soliton-like solution of the field equation and the resemblance between the DsG model and lambda phi(4) model, we show that there exist two types of structure phase transitions among four structures of the (D+1)-dimensional DsG model similar to the symmetry restored phase transition of lambda phi(4) model. For the first type of phase transition, the small kink-like solutions will disappear at the critical temperature while the large kink-like solutions will be changed continuously at the critical temperature. For the second type of the phase transitions, the metastable localized soliton-like solution will disappear, while the stable kink-like solution exists for all the temperatures and their exact form is also independent of the temperature being under or over the critical temperature.
部门归属FUDAN UNIV,FUDAN TD LEE PHYS LAB,SHANGHAI 200433,PEOPLES R CHINA; ACAD SINICA,INST THEORET PHYS,BEIJING 100080,PEOPLES R CHINA
关键词Canted Anti-ferromagnet Finite-temperature Soliton-solutions Statistical-mechanics Quantum Fluctuations Vacuum Polarization Nonlinear Equations Phi-4 Field Model Behavior
学科领域Physics
收录类别SCI
文献类型期刊论文
条目标识符http://ir.itp.ac.cn/handle/311006/11806
专题理论物理所SCI论文
通讯作者ZHU, YJ , NINGBO NORMAL COLL,DEPT PHYS,NINGBO 315211,PEOPLES R CHINA.
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ZHU, YJ,LOU, SY,ZHU, YJ , NINGBO NORMAL COLL,DEPT PHYS,NINGBO 315211,PEOPLES R CHINA.. STRUCTURE PHASE-TRANSITIONS OF THE (D+1)-DIMENSIONAL DOUBLE SINE-GORDON FIELD-THEORY[J]. COMMUNICATIONS IN THEORETICAL PHYSICS,1995,23(1):83-92.
APA ZHU, YJ,LOU, SY,&ZHU, YJ , NINGBO NORMAL COLL,DEPT PHYS,NINGBO 315211,PEOPLES R CHINA..(1995).STRUCTURE PHASE-TRANSITIONS OF THE (D+1)-DIMENSIONAL DOUBLE SINE-GORDON FIELD-THEORY.COMMUNICATIONS IN THEORETICAL PHYSICS,23(1),83-92.
MLA ZHU, YJ,et al."STRUCTURE PHASE-TRANSITIONS OF THE (D+1)-DIMENSIONAL DOUBLE SINE-GORDON FIELD-THEORY".COMMUNICATIONS IN THEORETICAL PHYSICS 23.1(1995):83-92.
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