Interfaces in the XY Model and Conformal Invariance
ZHANG De-gang1 , CHEN Zhong-jun1 , LI Bo-zang2
1 Institute of Solid State Physics, Sichuan Normal University, Chengdu 610068
2 Institute of Physics, Chinese Academy of Sciences, Beijing 100080
Interfaces in the XY Model and Conformal Invariance
ZHANG De-gang1 ;CHEN Zhong-jun1 ;LI Bo-zang2
1 Institute of Solid State Physics, Sichuan Normal University, Chengdu 610068
2 Institute of Physics, Chinese Academy of Sciences, Beijing 100080
关键词 ：
64.60.-i ,
05.70.Jk ,
75.70.-i
Abstract ： The one-dimensional XY model with n arbitrarily placed interfaces is investigated. The energy spectrum is shown to have a tower structure only for a commensurate configuration of the critical parameters. The interfacial critical exponents in such cases are determined from conformal invariance theory. The underlying algebra generating the conformal spectrum is the shifted SO(4c) Kac-Moody algebra, the central charge is 2c, which is exactly two times of that in the Ising model with the same structure of interfaces.
Key words ：
64.60.-i
05.70.Jk
75.70.-i
出版日期: 1999-01-01
:
64.60.-i
(General studies of phase transitions)
05.70.Jk
(Critical point phenomena)
75.70.-i
(Magnetic properties of thin films, surfaces, and interfaces)
引用本文:
ZHANG De-gang;CHEN Zhong-jun;LI Bo-zang. Interfaces in the XY Model and Conformal Invariance[J]. 中国物理快报, 1999, 16(1): 44-46.
链接本文:
https://cpl.iphy.ac.cn/CN/
或
https://cpl.iphy.ac.cn/CN/Y1999/V16/I1/44
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