Journal
PHYSICAL REVIEW A
Volume 72, Issue 3, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevA.72.032327
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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(2)[2 pi en(L-n)/L]+C, where sigma is the on-site spin and C is a function depending only on magnetization.
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