paper

Holographic Phases of Renyi Entropies

arXiv:1306.2640 · doi:10.1007/JHEP12(2013)050

Abstract

We consider Renyi entropies of conformal field theories in flat space, with the entangling surface being a sphere. The AdS/CFT correspondence relates this Renyi entropy to that of a black hole with hyperbolic horizon; as the Renyi parameter increases the temperature of the black hole decreases. If the CFT possesses a sufficiently low dimension scalar operator the black hole will be unstable to the development of hair. Thus, as is varied, the Renyi entropies will exhibit a phase transition at a critical value of . The location of the phase transition, along with the spectrum of the reduced density matrix , depends on the dimension of the lowest dimension non-trivial scalar operator in the theory.

21 pages, 7 figures, v3 - References added. Neumann boundary conditions added in section 5

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