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arXiv · 1011.3499

Proof of universality of electrical conductivity at finite chemical potential

Sayan K. Chakrabarti·Shankhadeep Chakrabortty·Sachin Jain
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Abstract

It was proposed in arXiv:1008.2944 that, for certain gauge theories with gravity duals, electrical conductivity at finite chemical potential is universal. Here we provide a general proof that, when matter stress tensor satisfies a compact constraint, electrical conductivity is universal. We further elaborate our result with several conformal as well as non-conformal gauge theories. We also discuss how boundary conductivity and universal conductivity of stretched horizon are related.

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Sayan K. Chakrabarti, Shankhadeep Chakrabortty, Sachin Jain. 2011-02-17. Proof of universality of electrical conductivity at finite chemical potential. https://doi.org/10.1007/jhep02(2011)073

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