Disentangling the thermofield-double state

A bstract In this paper, we consider the evolution of thermofield-double state under double-traced operator that connects its both sides. We will compute entanglement entropy resulting using replica trick for large N field theory. To leading order, it can be computed from two-point function theory, where, in CFTs, is fixed by symmetries. Due to exponential decay interaction, saturates about thermal time after interaction on. Next, restrict ourselves one dimension and assume theory at strong coupling effectively described Schwarzian action. then coarse-grained four-point function. The equality two entropies implies operators our act coherently . AdS/CFT correspondence where corresponds a two-sided black hole, action shrinking or expanding hole bulk.