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PIRSA:21040007

Video URL

https://pirsa.org/21040007

A Generalized Hartle-Hawking State

          @misc{ scivideos_PIRSA:21040007,
            doi = {10.48660/21040007},
            url = {https://pirsa.org/21040007},
            author = {Alexander, Stephon},
            keywords = {Quantum Gravity},
            language = {en},
            title = {A Generalized Hartle-Hawking State},
            publisher = {Perimeter Institute for Theoretical Physics},
            year = {2021},
            month = {apr},
            note = {PIRSA:21040007 see, \url{https://scivideos.org/index.php/pirsa/21040007}}
          }

Stephon Alexander Brown University

Talk numberPIRSA:21040007
DOI10.48660/21040007
Source RepositoryPIRSA
Collection
Talk Type Scientific Series
Subject

Abstract

The Hartle-Hawking-Vilenkin state is defined on mini-superspace and is semiclassically related to inflationary theory.  However, the state suffers a few problems connected to the path integral of Euclidean or the Lorentzian measure of metrics.  In this talk, we will explore a way around these issues by working in the (Ashtekar) connection representation, a real Kodama-Chern-Simons state.  We find a generalized "Fourier Transform" that related the Chern-Simons-Kodama state to the Hartle-Hawking state beyond mini-superspace.  We end with some discussion and open ended questions for cosmology and quantum gravity.