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Neutrinos in Cosmology after Planck: What are their masses, properties, and relationship with the Hubble tension?
Neutrinos are a key (although implicit) ingredient of the standard cosmological model, LambdaCDM. Firstly, neutrinos directly participate in neutron freeze out during BBN, and secondly, they represent 40% of the...
Jun 23, 2020
The physics of compact objects in general relativity.
The study of compact objects in the strong field regime needs a thorough understanding of the initial value problem in general relativity at the resence of hydrodynamical or magnetohydrodynamical sources...
Jun 25, 2020
What’s Next for the Effective Field Theory of Large Scale Structure?
Over the last decade, the Effective Field Theory of Large Scale Structure (EFTofLSS) has emerged as a frontrunner in the effort to produce accurate models of cosmological statistics. Quantities such...
Jun 30, 2020
Space time fluctuations in AdS/CFT and Extensions to Minkowski
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Based on recent work arXiv:1902.08207 and arXiv:1911.02018 with E. Verlinde.
Jul 07, 2020
Recent insights on SN1987a: implications for BSM phenomenology
New results from astrophysics have radically changed our understanding of neutron stars and supernovae, specifically SN1987A. In this talk, I will describe some of these results and the implications they...
Jul 07, 2020
Controlled access to the low-energy physics of critical Fermi surfaces
Condensed matter physics is the study of the complex behaviour of a large number of interacting particles such that their collective behaviour gives rise to emergent properties. We will discuss...
Jul 13, 2020
Relieving the Hubble tension with primordial magnetic fields
The standard cosmological model determined from the accurate cosmic microwave background measurements made by the Planck satellite implies a value of the Hubble constant H0 that is 4.2 standard deviations...
Jul 14, 2020
Analyticity and unitarity's offspring: anomalous dimensions and the space of EFTs
In the first part of the talk I will present how to compute anomalous dimensions of EFT operators using on-shell scattering amplitudes. The method is used to compute some two...
Jul 14, 2020
Entanglement entropies of equilibrated pure states and replica wormholes
Consider a quantum many-body system initially in a far-from-equilibrium pure state. If the system is non-integrable, the state should approach equilibrium after some time. We develop an approximation to calculate...
Jul 16, 2020