Entanglement entropy and conformal field theory

2009/05/31 by Pasquale Calabrese, John Cardy · 12 citations
Physics and Astronomy · #cond-mat.stat-mech #cond-mat.str-el #hep-th #quant-ph

paper · pdf · doi:10.1088/1751-8113/42/50/504005

published as J.Phys.A42:504005,2009 · 39 Pages, 10 figures. Review article for the special issue "Entanglement entropy in extended systems" in J. Phys. A. V2 Refs added, typos corrected

arxiv created 2009/10/14 · arxiv updated 2010/01/07

Abstract

We review the conformal field theory approach to entanglement entropy. We show how to apply these methods to the calculation of the entanglement entropy of a single interval, and the generalization to different situations such as finite size, systems with boundaries, and the case of several disjoint intervals. We discuss the behaviour away from the critical point and the spectrum of the reduced density matrix. Quantum quenches, as paradigms of non-equilibrium situations, are also considered.

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• Entanglement Resolution with Respect to Conformal Symmetry
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