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Albash, Tameem; Johnson, Clifford V.

Evolution of holographic entanglement entropy after thermal and electromagnetic quenches. (English) Zbl 1448.83015

New J. Phys. 13, No. 4, Article ID 045017, 26 p. (2011).
Summary: We study the evolution and scaling of the entanglement entropy after two types of quenches for a 2+1 field theory, using a conjectured holographic technique for its computation. We study a thermal quench, dual to the addition of a shell of uncharged matter to four-dimensional anti-de Sitter (AdS\(_{4}\)) spacetime, and study the subsequent formation of a Schwarzschild black hole. We also study an electromagnetic quench, dual to the addition of a shell of charged sources to AdS\(_{4}\), following the subsequent formation of an extremal dyonic black hole. In these backgrounds, we consider the entanglement entropy of two types of geometries, the infinite strip and the round disc, and find distinct behavior for each. Some of our findings naturally supply results analogous to observations made in the literature for lower dimensions, but we also uncover several new phenomena, such as (in some cases) a discontinuity in the time derivative of the entanglement entropy as it nears saturation, and for the electromagnetic quench, a logarithmic growth in the entanglement entropy with time for both the disc and strip, before settling to saturation. We briefly discuss the possible origin of the new phenomena in terms of the features of the conjectured dual field theory.

Cited in 59 Documents

MSC:

83C57 Black holes
81P40 Quantum coherence, entanglement, quantum correlations
81P42 Entanglement measures, concurrencies, separability criteria
81T35 Correspondence, duality, holography (AdS/CFT, gauge/gravity, etc.)
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\textit{T. Albash} and \textit{C. V. Johnson}, New J. Phys. 13, No. 4, Article ID 045017, 26 p. (2011; Zbl 1448.83015)
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