Filters
557 results
Ignorance is Cheap: From Black Hole Entropy To Energy-Minimizing States In QFT
Behind certain marginally trapped surfaces one can construct a geometry containing an extremal surface of equal, but not larger area. This construction underlies the Engelhardt-Wall proposal for explaining the Bekenstein-Hawking...
Oct 29, 2019
Entanglement and extended conformal field theory
Defining entanglement in a continuum field theory is a subtle challenge, because the Hilbert space does not naively factorize into local products. For gauge theories, the problem arises from the...
Nov 05, 2019
Electroweak Quintessence Axion Revisited in Light of Swampland Conjectures
It is a curious numerology that the dynamical scale associated with the instanton of the electroweak SU(2) gauge group is approximately the energy scale of dark energy. We revisit this...
Nov 12, 2019
Defect Monstrous Moonshine
The Monster CFT is a (1+1)d holomorphic CFT with the Monster group global symmetry. The symmetry twisted partition functions exhibit the celebrated Monstrous Moonshine Phenomenon. From a modern point of...
Nov 26, 2019
Quantum Fields and Strings Seminar
Abstract TBA
Jan 01, 2019
Black hole information, spacetime wormholes and baby universes
Hawking famously observed that the formation and evaporation of black holes appears to violate the unitary evolution of quantum mechanics. Nonetheless, it has been recently discovered that a signature of...
May 14, 2020
Holographic cosmology: status report
I will give an overview of holographic cosmology and discuss recent results and work in progress. In holographic cosmology time evolution is mapped to inverse RG flow of the dual...
May 19, 2020
Casimir and free energy for free fields and holographic theories in 2+1 on curved spaces
We investigate putting 2+1 free and holographic theories on a product of time with a curved compact 2-d space. We then vary the geometry of the space, keeping the area...
May 26, 2020
Bootstrapping Matrix Quantum Mechanics
Abstract: Large N matrix quantum mechanics are central to holographic duality but not solvable in the most interesting cases. We show that the spectrum and simple expectation values in these...
Sep 15, 2020
Effective entropy of quantum fields coupled with gravity
Entanglement entropy quantifies the amount of uncertainty of a quantum state. For quantum fields in curved space, entanglement entropy of the quantum field theory degrees of freedom is well-defined for...
Sep 22, 2020