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Journal of High Energy Physics

, 2016:7

First Online: 02 November 2016Received: 19 June 2016Revised: 23 September 2016Accepted: 24 October 2016 Abstract

In this paper we investigate the ratio of shear viscosity to entropy density, η-s, in hyperscaling violating geometry with lattice structure. We show that the scaling relation with hyperscaling violation gives a strong constraint to the mass of graviton and usually leads to a power law of temperature, η-s ∼ T. We find the exponent κ can be greater than two such that the new bound for viscosity raised in 7 is violated. Our above observation is testified by constructing specific solutions with UV completion in various holographic models. Finally, we compare the boundedness of κ with the behavior of entanglement entropy and conjecture a relation between them.

KeywordsGauge-gravity correspondence Holography and condensed matter physics AdS-CMT Holography and quark-gluon plasmas Black Holes ArXiv ePrint: 1605.03879

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Autor: Yi Ling - Zhuoyu Xian - Zhenhua Zhou

Fuente: https://link.springer.com/







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