String Theory Seminar @ 3:40pm: Tadashi Takayanagi (Yukawa Institute for Theoretical Physics, Kyoto University) “A New Generalization of Entanglement Entropy: Pseudo Entropy”

Seminar Organizer

Event Details

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.