[Seminar] "Spacetime Foam and the Cosmological Constant" by Prof. Steven Carlip

Speaker: Prof. Steven Carlip, University of California, Davis

Theoretical Physics Seminar: Riccardo Martini

Theoretical Physics Seminar.
Speaker: Riccardo Martini (Gravity, Quantum Geometry and Field Theory).
Title: "Renormalization methods in quantum gravity".

Group Meeting Talk: BMS Symmetry and OPE of Celestial CFTs

Title : BMS Symmetry and OPE of Celestial CFTs

Speaker: Sudip Ghosh

Abstract: The holographic dual of quantum gravitational theories in asymptotically flat spacetimes has recently been conjectured to be the so called celestial conformal field theories whose correlation functions are Mellin transforms of bulk scattering amplitudes. In this talk I will discuss aspects of a derivation of the OPE in these CFTs from the collinear singularities of graviton scattering amplitudes and the constraints of BMS symmetries on the OPE coefficients. 

Theoretical Physics Seminar: Alistair Graham

Theoretical Physics Seminar.
Speaker: Alistair Graham (Quantum Gravity).
Title: "Measuring Chaos in General Relativity".

Journal club seminar: Implications of Symmetry and Pressure in Friedmann Cosmology

Title: Implications of Symmetry and Pressure in Friedmann Cosmology

Abstract: We will continue the discussion of the recent paper by K. S. Croker and J. L. Weiner    "Implications of Symmetry and Pressure in Friedmann Cosmology". Carlos Octavio Villalpando Vargas will be leading the discussion. 

Group Meeting Talk: Implications of Symmetry and Pressure in Friedmann Cosmology

Title:  Implications of Symmetry and Pressure in Friedmann Cosmology

Speaker: Vilalpando Vargas Carlos Octavio

[Seminar] "Surface operators in N=2 SQCD and Seiberg Duality" by Sourav Ballav

Speaker: Sourav Ballav from The Institute of Mathematical Sciences, Chennai, India

[Seminar] "Classical soft theorem in four dimension" by Dr. Arnab Priya Saha

Speaker: Dr. Arnab Priya Saha, Harish-Chandra Research Institute, India

Journal club seminar: Unitarity Methods in AdS/CFT

Title: Unitarity methods in AdS/CFT

Abstract: We are going to discuss the recent paper by David Meltzer , Eric Perlmutter and Allic Sivaramakrishnan  "Unitarity methods in AdS/CFT". Sudip Ghosh will be leading the discussion. 

QG group meeting: Symplectic reduction, asymptotic symmetries and edge modes

This is the weekly QG group meeting.
Speaker: Slava Lysov
Title: "Symplectic reduction, asymptotic symmetries and edge modes"