非相对论体系中 Nambu-Goldstone 模式的计数规则。
Counting rule for Nambu-Goldstone modes in nonrelativistic systems.
机构信息
Mathematical Physics Laboratory, RIKEN Nishina Center, Saitama 351-0198, Japan.
出版信息
Phys Rev Lett. 2013 Mar 1;110(9):091601. doi: 10.1103/PhysRevLett.110.091601. Epub 2013 Feb 27.
Abstract
The counting rule for Nambu-Goldstone modes is discussed using Mori's projection operator method in nonrelativistic systems at zero and finite temperatures. We show that the number of Nambu-Goldstone modes is equal to the number of broken charges, Q(a), minus half the rank of the expectation value of [Q(a), Q(b)].
摘要
使用 Mori 的投影算符方法在零温和有限温的非相对论体系中讨论了 Nambu-Goldstone 模的计数规则。我们表明，Nambu-Goldstone 模的数目等于被破坏的荷（Q(a)）的数目减去 [Q(a), Q(b)] 的期望值的秩的一半。
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