[phys4phys] Group for Gravitation, Particle and Fields seminar, Friday 24 November 2023

[dgocanin]

Dear colleagues,

You are cordially invited to the seminar of the Group for Gravitation, 
Particles and Fields, which will be held on Friday, 24 November 2023, at 
11:00 at the Institute of Physics, lecture hall 360.

The talk entitled

Boundary terms and branes in the first-order gravity

will be given by Dušan Đorđević (Faculty of Physics University of 
Belgrade).

Abstract: The story of boundary terms in a gravity action dates back to 
the seventies, yet there are still important questions that need to be 
fully understood. In this talk, we will revisit the role of the 
Gibbons-Hawking-York boundary term in the Einstein-Hilbert gravity, with 
a clear motivation to address the issue of bottom-up AdS/BCFT duality in 
a case where bulk geometry is Riemann-Cartan. We will comment on 
different approaches to GHY-like boundary terms in this scenario and 
then use our knowledge to understand the issue of end-of-the-world 
branes with (traditional) Neumann boundary conditions in the first-order 
gravity, which is a necessary step to address the AdS/BCFT duality 
adequately. Our analysis will be based on a simple set of gravity 
theories in different dimensions. Apart from this, we will also touch 
upon the issue of black hole thermodynamics.

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Time: November 24, 2023 11:00 Belgrade

Institute of Physics, lecture hall 360, 2nd floor

BigBlueButton platform link: 
https://gravityserver.ipb.ac.rs/b/mar-ae0-f4q-qww

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Best regards,
Dragoljub