String Seminar
String Seminar
Date:
-
Location:
CP 303
Event Series:
Physics & Astronomy String Seminar
Gerald Hoehn, Kansas State University
Title: Codes, Lattices and Vertex Operator Algebras
Abstract: TBA
Date:
Location:
CP 303
Event Series:
String Seminar
Title:
The Gravitational Path Integral and Axion Wormholes
Abstract:
We investigate the relevance of axiom wormholes to the AdS/CFT factorization problem using Lorentz-signature gravitational path integrals.
Date:
Location:
Zoom
Event Series:
Physics & Astronomy String Seminar
Title: Hamiltonian approach to near extremal black hole physics
Abstract: Much progress has been made in recent years on understanding near-extremal black holes, primarily through the Euclidean path integral. These findings include large backreaction effects at both classical and quantum levels. However, a Lorentzian formulation of these effects, as needed to describe black holes formed from collapse along with other dynamical processes, is not well understood. I will describe an approach to this problem based on the Hamiltonian formulation of gravity. In this formulation we can make contact with earlier Euclidean results while also generalizing to inherently Lorentzian processes like black hole formation.
Date:
-
Location:
CP 303
Event Series:
Physics & Astronomy String Seminar
Title: Exact Transition Amplitudes in Liouville CFT and the Cigar
Abstract: We study exact transition amplitudes in certain 2D CFTs — Liouville theory and the SL(2,R)/U(1) coset model describing Witten's 2D black hole. Using bootstrapped conserved currents and a generating functional approach based on canonical transformations, we compute these transitions both recursively and via functional integral representations. The tree-level evaluation of the generating functional reproduces exact results, while providing a diagrammatic framework for loop corrections. We also find that the statistics of Liouville transition elements at higher oscillator levels exhibit level repulsion.
Date:
-
Location:
CP 303
Event Series: