From: Barton Zwiebach <zwiebach(a)mit.edu> Subject: [Ctp-strings] Tomorrow Monday Morning String Club: Hong Liu Speaking ! Begin exactly at 11:10 am ! Date: November 1, 2015 at 12:59:30 PM EST To: ctp-strings <ctp-strings(a)mit.edu> Dear All: Tomorrow morning we have Hong Liu speaking on entanglement. We will start promptly at 11:10. We hope to see you there. Nima and Barton. Title: Spread of entanglement and causality. Abstract: We investigate causality constraints on the time evolution of entanglement entropy after a global quench in relativistic theories. We first provide a general proof that the so-called tsunami velocity is bounded by the speed of light. Then we discuss various models which shed light on how entanglement spread in interacting many-body systems.