Title：A New Generalization of Entanglement Entropy: Pseudo Entropy

Speaker：Tadashi Takayanagi

Time：April 12,202114：30

Venue：302，Physics Building

Online report（ZOOM ID：815 9984 6240）

Abstract：Pseudo-entropy is an interesting quantity with a simple gravity dual, which generalizes entanglement entropy such that it depends on both an initial and a final state.

In this talk we start with an introduction of this new quantity explaining its basic properties. Next we will study its gravity dual. Finally, we will present recent numerical results of this quantity in a free scalar field theory and in a spin system, which imply that pseudo entropy can serve as a new quantum order parameter.

This talk is based on arXiv:2005.13801 and arXiv:2011.09648.

Brief Bio：

Professional Experience:

2002 Get Ph.D. degree and then JSPS postdoc fellow at University of Tokyo

2002-2006 Postdoctoral Fellow at Harvard University and Kavli Institute for Theoretical Physics, University of California

2006-2012 Associate Professor at Kyoto University and IPMU

2012-Now is Professor at Yukawa Institute for Theoretical Physics, Kyoto University

Academic awards:

2011 Yukawa-Kimura Prize

2013 Nishinomiya-Yukawa Memorial Prize

2015 New Horizons in Physics Prizes

2016 Nishina Memorial Prize