首页 | 本学科首页   官方微博 | 高级检索  
     


Long-range order in quantum lattice systems of linear oscillators
Authors:W. I. Skrypnik
Affiliation:(1) Institute of Mathematics, Ukrainian Academy of Sciences, Kiev
Abstract:The existence of the ferromagnetic long-range order is proved for equilibrium quantum lattice systems of linear oscillators whose potential energy contains a strong ferromagnetic nearest-neighbor (nn) pair interaction term and a weak nonferromagnetic term under a special condition on a superstability bound. It is shown that the long-range order is possible if the mass of a quantum oscillator and the strength of the ferromagnetic nn interaction exceed special values. A generalized Peierls argument and a contour bound, proved with the help of a new superstability bound for correlation functions, are our main tools. Published in Ukrains’kyi Matematychnyi Zhurnal, Vol. 58, No. 10, pp. 1407–1424, October, 2006.
Keywords:
本文献已被 SpringerLink 等数据库收录!
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号