PIRSA:13110049

Finite regions, spherical entanglement, and quantum gravity

Haggard, H. (2013). Finite regions, spherical entanglement, and quantum gravity. Perimeter Institute. https://pirsa.org/13110049

Haggard, Hal. Finite regions, spherical entanglement, and quantum gravity. Perimeter Institute, Nov. 14, 2013, https://pirsa.org/13110049 

          @misc{ pirsa_PIRSA:13110049,
            doi = {10.48660/13110049},
            url = {https://pirsa.org/13110049},
            author = {Haggard, Hal},
            keywords = {Quantum Gravity},
            language = {en},
            title = {Finite regions, spherical entanglement, and quantum gravity},
            publisher = {Perimeter Institute},
            year = {2013},
            month = {nov},
            note = {PIRSA:13110049 see, \url{https://pirsa.org}}
          }

Hal Haggard Bard College

Talk numberPIRSA:13110049
DOI10.48660/13110049
Collection
Talk Type Scientific Series
Subject

Abstract

An exciting frontier in physics is to understand the quantum nature of gravitation in finite regions of spacetime. Study of these regions from ``below'', that is, by studying the quantum geometry of finite regions emerging from loop gravity and spin networks has recently resulted in a new road to the quantization of volume and to evidence that there is a robust gap in the volume spectrum. In this talk I will complement these results with recent work on conformal field theories in a particular finite region, a spherical ball of space. This new view afforded from ``above" gives insights into entanglement and the Reeh-Schlieder theorem, allows calculation of the entanglement spectrum, and suggests a new route to constructing the Minkowski vacuum out of independent finite regions in quantum gravity.