Application of the replica method to the lattice gauge field entanglement entropy
Abstract:
Superluminal modes appear in Gauss-Bonnet gravity due to the
non-canonical form of kinetic term. With superluminal modes,
causal structures become nontrivial. In this talk, I will
briefly review the way to analyze causal structure, called
the characteristic method, and show the causal structures
in Gauss-Bonnet gravity.
