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Stochasticity and Axion Direct Detection
The ultralight axion-like particle remains a compelling dark matter candidate. If such a particle constitutes dark matter, it will generate a classical field that oscillates at the compton frequency but...
Sep 01, 2020
Stars stripped in binaries: from cosmic reionization to gravitational waves
Most massive stars spend their lives in so close orbit with a companion star that severe mass exchange or even coalescence is inevitable as the stars evolve and swell. A...
Sep 10, 2020
Advances in numerical techniques for spinfoam amplitudes with applications
The computation of transition amplitudes in Loop Quantum Gravity is still a hard task, especially without resorting to large-spins approximations. In Marseille we are actively developing a C library (...
Sep 10, 2020
More Axions from Strings
The axion solution to the strong CP problem also provides a natural dark matter candidate. If the Peccei-Quinn symmetry has ever been restored after inflation, topological defects of the axion...
Sep 11, 2020
CMB lensing and new constraints on the early universe
Measurements of gravitational lensing in the cosmic microwave background (CMB) allow the dark matter distribution to be mapped out to uniquely high redshifts. After giving a brief overview of current...
Sep 15, 2020
TBA
Abstract TBD
Sep 15, 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
The ghost in the radiation: Robust encodings of the black hole interior
We reconsider the black hole firewall puzzle, emphasizing that quantum error-correction, computational complexity, and pseudorandomness are crucial concepts for understanding the black hole interior. We assume that the Hawking radiation...
Sep 16, 2020
Holography of information from semiclassical gravity
We will argue that even with semiclassical gravity, it can be shown that a copy of all the information on a Cauchy slice resides near the boundary of the slice...
Sep 17, 2020