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PKU HEP Seminar and Workshop (北京大学高能物理组)

BMS Modular Diaries and Minkowskian Holography

by Prof. Arjun Bagchi (Indian Inst. Tech.)



One of the successful routes to Minkowskian holography is the formulation of the duality in terms of BMS-invariant field theories that live on the null boundary of spacetime. In 2d BMS field theories, one can define a notion of modular invariance that leads to a BMS-Cardy formula. This formula reproduces the Bekenstein Hawking entropy of cosmological horizons in 3d flat space. We revisit this construction before building on it to find asymptotic BMS structure constants from the modular covariance of torus one-point functions. We also formulate a bulk calculation that reproduces our field theory answers. Let's use Zoom: https://zoom.com.cn/j/96357968034?pwd=K2REeGF0V2dqOElRd09hVGVRcDk4Zz09 or https://cern.zoom.us/j/96357968034?pwd=K2REeGF0V2dqOElRd09hVGVRcDk4Zz09 Meeting ID: 963 5796 8034 Password: 125125 Download website of recorded files: https://pan.baidu.com/s/1eEscJnXdqWZ3LJY3EPjueQ Password:0115