Entropy on a null surface for interacting quantum field theories and the Bousso bound
Entropy on a null surface for interacting quantum field theories and the Bousso bound
We study the vacuum-subtracted von Neumann entropy of a segment on a null plane. We argue that for interacting quantum field theories in more than two dimensions, this entropy has a simple expression in terms of the expectation value of the null components of the stress tensor on the null …