PIRSA:17090071

Complex Quantum Tunneling, Picard-Lefschetz Theory, and the Decay of Black Holes

APA

Haggard, H. (2017). Complex Quantum Tunneling, Picard-Lefschetz Theory, and the Decay of Black Holes. Perimeter Institute for Theoretical Physics. https://pirsa.org/17090071

MLA

Haggard, Hal. Complex Quantum Tunneling, Picard-Lefschetz Theory, and the Decay of Black Holes. Perimeter Institute for Theoretical Physics, Sep. 28, 2017, https://pirsa.org/17090071

BibTex

          @misc{ scivideos_PIRSA:17090071,
            doi = {10.48660/17090071},
            url = {https://pirsa.org/17090071},
            author = {Haggard, Hal},
            keywords = {Quantum Gravity},
            language = {en},
            title = {Complex Quantum Tunneling, Picard-Lefschetz Theory, and the Decay of Black Holes},
            publisher = {Perimeter Institute for Theoretical Physics},
            year = {2017},
            month = {sep},
            note = {PIRSA:17090071 see, \url{https://scivideos.org/index.php/pirsa/17090071}}
          }
          

Hal Haggard Bard College

Talk numberPIRSA:17090071
Source RepositoryPIRSA
Collection

Abstract

Quantum effects render black holes unstable. In addition to Hawking radiation, which leads to the prediction of a long lifetime, there is the possibility of quantum tunneling of the black hole geometry itself. A robust possibility for treating the quantum tunneling of a spacetime geometry is through a complex path integral and Picard-Lefschetz theory. I will illustrate the semiclassical approximation of complex path integrals using these techniques with an analytically solvable 1D quantum potential—the inverse square barrier—and describe the setup of the calculation for spherically symmetric black holes. While the black hole calculation is incomplete, I will be able to describe a surprising extension of this setup to the more astrophysical rotating Kerr black hole.