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 log22enL−n /L+C, where is the on-site spin and C is a function depending only on magnetization.

Entangling power of permutation invariant quantum states

SALERNO, Mario;
2005

Abstract

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 log22enL−n /L+C, where is the on-site spin and C is a function depending only on magnetization.
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11386/1063826
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