Entanglement thermodynamics for non-conformal D-branes

Abstract

We study thermodynamics of entanglement entropy for weakly excited states in certain non-conformal fields theories, whose gravity duals are given by non-conformal Dp-branes. We observe that the entanglement entropy of a sufficiently small system in non-conformal backgrounds still obeys a first-law like relation, just as the AdS counterparts investigated in arXiv: 1212.1164 [hep-th]. The effective temperature is proportional to the inverse of the size of the subsystem. The proportionality is a dimensionless constant which is only determined by the shape of the entangling region and independent of any coupling. This universality is confirmed by working with the ten-dimensional string frame metric as well as the lower-dimensional effective metric. When the entangling region is a strip and translational invariance is broken by metric fluctuations, we derive a first-law like relation where additional components of the stress energy tensor are involved.

24 pages, typos corrected, references added, accepted by Phys. Rev. D

References in corpus (4)

• Towards a derivation of holographic entanglement entropy
• Thermodynamical Property of Entanglement Entropy for Excited States
• Precision holography for non-conformal branes
• Holographic Entanglement Entropy at Finite Temperature

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