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Noncommutative Zhu algebra and quantum field theory in four and three dimensions
For any vertex operator algebra V, Y. Zhu constructed an associative algebra Zhu(V) that captures its representation theory (more generally, given a finite order automorphism g of V, there exists...
Feb 25, 2020
Replica wormholes and the black hole information paradox
The information paradox can be realized in two-dimensional models of gravity. In this setting, we show that the large discrepancy between the von Neumann entropy as calculated by Hawking and...
Apr 21, 2020
Resolving the H_0 tension with diffusion
Resolving the H_0 tension with diffusion
Apr 23, 2020
The Cosmological Evolution of Light Dark Photon Dark Matter
Light dark photons are subject to various plasma effects, such as Debye screening and resonant oscillations, which can lead to a more complex cosmological evolution than is experienced by conventional...
Apr 28, 2020
On Gauss-Bonnet gravity in four dimensions
We comment on the recently introduced Gauss-Bonnet gravity in four dimensions. We argue that it does not make sense to consider this theory to be defined by a set of...
Apr 30, 2020
Quantum-reduced loop gravity from the perspective of full LQG
Quantum-reduced loop gravity is a model of loop quantum gravity, whose characteristic feature is the considerable simplicity of its kinematical structure in comparison with that of full loop quantum gravity...
Apr 30, 2020
JT gravity at finite cutoff
We compute the partition function of 2D Jackiw-Teitelboim (JT) gravity at finite cutoff in two ways: (i) via an exact evaluation of the Wheeler-DeWitt wave-functional in radial quantization and (ii)...
May 05, 2020
Ultracold Molecules: From Quantum Chemistry to Quantum Computing
Cooling atomic gases to ultracold temperatures revolutionized the field of atomic physics, connecting with and impacting many other areas in physics. Advances in producing ultracold molecules suggest similarly dramatic discoveries...
May 06, 2020