title: Entanglement entropy in Galilean conformal field theories and flat holography.
abstract: We present the analytical calculation of entanglement entropy for a class of two-dimensional field theories governed by the symmetries of the Galilean conformal algebra, thus providing a rare example of such an exact computation. These field theories are the putative holographic duals to theories of gravity in three-dimensional asymptotically flat spacetimes. We provide a check of our field theory answers by an analysis of geodesics. We also exploit the Chern-Simons formulation of three-dimensional gravity and adapt recent proposals of calculating entanglement entropy by Wilson lines in this context to find an independent confirmation of our results from holography.
authors.affiliation: Indian Institute of Science Education and Research (IISER), Dr Homi Bhabha Road, Pashan, Pune, Maharashtra 411008, India.|Institute for Theoretical Physics, Vienna University of Technology, Wiedner Hauptstrasse 8-10/136, A-1040 Vienna, Austria.
authors.forename: Arjun
authors.initials: A
authors.lastname: Bagchi
authors.affiliation: Indian Institute of Science Education and Research (IISER), Dr Homi Bhabha Road, Pashan, Pune, Maharashtra 411008, India.
authors.forename: Rudranil
authors.initials: R
authors.lastname: Basu
authors.affiliation: Institute for Theoretical Physics, Vienna University of Technology, Wiedner Hauptstrasse 8-10/136, A-1040 Vienna, Austria.
authors.forename: Daniel
authors.initials: D
authors.lastname: Grumiller
authors.affiliation: Institute for Theoretical Physics, Vienna University of Technology, Wiedner Hauptstrasse 8-10/136, A-1040 Vienna, Austria.|Yukawa Institute for Theoretical Physics (YITP), Kyoto University, Kyoto 606-8502, Japan.
authors.forename: Max
authors.initials: M
authors.lastname: Riegler