Date: 2017.12.08 (Friday) 15:00

Place: Rm 323, Physics Building, Sichuan University

Speaker: Dr. Huajia Wang (王华嘉) (UIUC)

Title: Quantum information, causality and constraints on QFTs

Abstract: It has become increasingly clear that the key to understanding many fundamental questions in quantum field theories (QFTs) is encoded in the underlying structure of entanglement and causality. In this talk, I will discuss a particular direction along such a line: tracing the quantum information and causality origins of energy conditions in QFTs. In particular, I will discuss two approaches to prove the averaged null energy condition (ANEC), one from quantum information constraint and the other from causality constraint. Furthermore, I will discuss how, by combining both elements and consider causality probed by the entanglement data, one can prove the stronger quantum null energy condition (QNEC).