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PERIMETER INSTITUTE RECORDED SEMINAR ARCHIVE

Displaying all lectures given by: Hal Haggard


PIRSA:19030081  ( MP4 Medium Res , MP3 , PDF ) Which Format?
PSI 2018/2019 - Explorations in Quantum Gravity - Lecture 14
Abstract:

Brief introduction to gravitational wave detection 

Date: 21/03/2019 - 10:15 am

PIRSA:19010073  ( MP4 Medium Res , MP3 , PDF ) Which Format?
Quantum gravity and black hole spin in gravitational wave observations: a test of the Bekenstein-Hawking entropy
Speaker(s): Hal Haggard
Abstract: Black hole entropy is a robust prediction of quantum gravity with no observational test to date. We use the Bekenstein-Hawking entropy formula to determine the probability distribution of the spin of black holes at equilibrium in the microcanonical ensemble. We argue that ... read more
Date: 24/01/2019 - 2:30 pm

PIRSA:17090071  ( MP4 Medium Res , MP3 , PDF ) Which Format?
Complex Quantum Tunneling, Picard-Lefschetz Theory, and the Decay of Black Holes
Speaker(s): Hal Haggard
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... read more
Date: 28/09/2017 - 2:30 pm

PIRSA:13110049  ( MP4 Medium Res , MP3 , PDF ) Which Format?
Finite regions, spherical entanglement, and quantum gravity
Speaker(s): Hal Haggard
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 th... read more
Date: 14/11/2013 - 2:30 pm

PIRSA:13070054  ( MP4 Medium Res , MP4 Low Res , MP3 , PDF ) Which Format?
Black Holes - 3
Abstract:
Date: 23/07/2013 - 2:30 pm
Collection: Loops 13

PIRSA:12050084  ( MP4 Medium Res , MP4 Low Res , MP3 , PDF ) Which Format?
Pentahedral Volume, Chaos, and Quantum Gravity
Speaker(s): Hal Haggard
Abstract: The space of convex polyhedra can be given a dynamical structure. Exploiting this dynamics we have performed a Bohr-Sommerfeld quantization of the volume of a tetrahedral grain of space, which is in excellent agreement with loop gravity. Here we present investigations of the volume of a 5-faced conv... read more
Date: 30/05/2012 - 4:00 pm
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