Институт теоретической и математической физики

МГУ имени М.В. Ломоносова

ITMP Seminar "Closed string origin of thermal entropy"

ITMP Seminar
10 апреля 2024

Dear Colleagues,

We are pleased to announce that the next ITMP seminar will be held on Wednesday, Apr 10, 18:00 (Moscow time). It will be organised via Zoom.

Speaker: Dr. Indranil Halder, Harvard University

Title: Closed string origin of thermal entropy

Abstract: $\alpha'$ corrections to near horizon dynamics of a Schwarzschild black hole in a large number of spacetime dimensions $D$ are governed by the worldsheet theory composed of the cigar CFT and the classical sigma model on the sphere at the horizon, along with a timelike-Liouville theory of central charge $26-D$. At leading order in weak string coupling, black hole thermodynamics is insensitive to the details of timelike Liouville theory. In this limit, we use the Lewkowycz-Maldacena-trick motivated infinitesimally off-shell closed string worldsheet formalism in [arxiv: 2310.02313] to calculate thermal entropy exactly in $\alpha'$. The leading term in the $\alpha'\to 0$ limit and the first stingy correction of our result are in precise agreement with the target space Callan-Myers-Perry formula.

If you want to join the seminar please register here before 16:00, April 10 here.

If you would like to subscribe to newsletters about ITMP seminars, please, contact seminar@itmp.msu.ru



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