Neumann-boundary scalars in AdS_{2..5} get one-loop phase diagrams that are much more restricted than the Dirichlet ones, and symmetry breaking is often blocked by unitarity and thermal-series convergence constraints.
Double-Trace Deformations and Entanglement Entropy in AdS
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abstract
We compute the bulk entanglement entropy of a massive scalar field in a Poincare AdS with the Dirichlet and Neumann boundary condition when we trace out a half space. Moreover, by taking into account the quantum back reaction to the minimal surface area, we calculate how much the entanglement entropy changes under a double-trace deformation of a holographic CFT. In the AdS3/CFT2 setup, our result agrees with the known result in 2d CFTs. In higher dimensions, our results offer holographic predictions.
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Neumann scalars in AdS: partition functions and phases
Neumann-boundary scalars in AdS_{2..5} get one-loop phase diagrams that are much more restricted than the Dirichlet ones, and symmetry breaking is often blocked by unitarity and thermal-series convergence constraints.