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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