paper

Diffusivities bounds and chaos in holographic Horndeski theories

arXiv:1705.01766 · doi:10.1007/JHEP07(2017)055

Abstract

We study the thermoelectric DC conductivities of Horndeski holographic models with momentum dissipation. We compute the butterfly velocity and we discuss the existence of universal bounds on charge and energy diffusivities in the incoherent limit related to quantum chaos. We find that the Horndeski coupling represents a subleading contribution to the thermoelectric conductivities in the incoherent limit and therefore it does not affect any of the proposed bounds.

16 pages + 3 appendices, 2 figures; v2: references added, typo corrected ; v3: minor revisions, references added, version published in JHEP

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