Entangling power of permutation-invariant quantum states
Entangling power of permutation-invariant quantum states
复制标题
排列不变量子态的纠缠力
DOI:
--
复制
发表时间:
2005
期刊:
影响因子:
--
通讯作者:
G. Schuetz
中科院分区:
文献类型:
--
作者:
V. Popkov;M. Salerno;G. Schuetz
We investigate the von Neumann entanglement entropy as function of the size of a subsystem for permutation invariant ground states in models with finite number of states per site, e.g., in quantum spin models. We demonstrate that the entanglement entropy of n sites in a system of length L generically grows as {sigma} log{sub 2}[2{pi}en(L-n)/L]+C, where {sigma} is the on-site spin and C is a function depending only on magnetization.