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.File in questo prodotto:
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