报告题目：Unimodular JT gravity and de Sitter quantum cosmology

报 告 人:Farbod Rassouli (University of Nottingham)

报告时间：2025年4月3号上午14:30

报告地点：物理楼W260

内容摘要：In this talk, I will show how a gauge-theoretic approach to Jackiw–Teitelboim (JT) gravity naturally yields a two-dimensional Henneaux–Teitelboim (HT) unimodular theory, applicable to both flat and curved spacetimes. Under a mini-superspace reduction, the Wheeler–DeWitt equation becomes a Schrödinger-like equation admitting a consistent, unitary quantum description. The resulting wavefunction describes a quantum distribution for the scale factor, illuminating cosmic expansion and contraction, and allowing topology change at a=0.

报告人简介：Mr. Farbod Rassouli is a second year PhD student at University of Nottingham under supervision of Dr. Oliver Gould and Prof Paul Saffin, is currently working on twofold: Strong Phase Transition in QFT and Unimodular Gravity in lower dimensions.He completed his Underground at Royal Holloway University of London (2017-2022) and Master in Science in Quantum Fields and Fundamental Forcer at Imperial College London (2022-2023). His Research interest includes, quantum cosmology, QFT, topology change and phase transition.