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Holographic Entanglement for Chern-Simons Terms

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(Jul 8, 2015)

Abstract

We derive the holographic entanglement entropy contribution from pure and mixed gravitational Chern-Simons(CS) terms in AdS\$\_2k+1\$. This is done through two different methods : first, by a direct evaluation of CS action in a holographic replica geometry and second by a descent of Dong's derivation applied to the corresponding anomaly polynomial. In lower dimensions \$(k=1,2)\$, the formula coincides with the Wald-Tachikawa formula for black hole entropy from gravitational CS terms. New extrinsic curvature corrections appear for \$k3\$ : we give explicit and concise expressions for the two pure gravitational CS terms in AdS\$\_7\$ and present various consistency checks.

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