Higher derivative corrections to incoherent metallic transport in holography

Matteo Baggioli, Blaise Goutéraux, Elias Kiritsis, Wei Jia Li

Producció científica: Contribució a una revistaArticleRecercaAvaluat per experts

57 Cites (Scopus)

Resum

© 2017, The Author(s). Transport in strongly-disordered, metallic systems is governed by diffusive processes. Based on quantum mechanics, it has been conjectured that these diffusivities obey a lower bound D/v 2 ≳ ℏ/k B T , the saturation of which provides a mechanism for the T-linear resistivity of bad metals. This bound features a characteristic velocity v, which was later argued to be the butterfly velocity v B , based on holographic models of transport. This establishes a link between incoherent metallic transport, quantum chaos and Planckian timescales. Here we study higher derivative corrections to an effective holographic action of homogeneous disorder. The higher derivative terms involve only the charge and translation symmetry breaking sector. We show that they have a strong impact on the bound on charge diffusion D c /ν B2 ≳ ℏ/k B T, by potentially making the coefficient of its right-hand side arbitrarily small. On the other hand, the bound on energy diffusion is not affected.
Idioma originalEnglish
Número d’article170
RevistaJournal of High Energy Physics
Volum2017
Número3
DOIs
Estat de la publicacióPublicada - 1 de març 2017

Fingerprint

Navegar pels temes de recerca de 'Higher derivative corrections to incoherent metallic transport in holography'. Junts formen un fingerprint únic.

Com citar-ho