Nesta sexta-feira, dia 18/07, às 11h, teremos a palestra de Sayyed Rassouli (UN, Reino Unido), intitulada
“Unimodular JT gravity and de Sitter quantum cosmology”
A palestra será realizada no formato remoto, através do link
https://meet.google.com/fdk-wxuq-qrk
Sayyed Rassouli (Universidade de Nottingham, Reino Unido)
Título: Unimodular JT gravity and de Sitter quantum cosmology
Resumo: 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.
