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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
Physical footprints of intrinsic sign problems
The sign problem is a widespread numerical hurdle preventing us from simulating the equilibrium behaviour of many interesting models, most notably the Hubbard model. Research aimed at solving the sign...
Jul 21, 2020
Cosmology from the SDSS
On Monday July 20th, we announced the final results from extended Baryon Oscillation Spectroscopic Survey (eBOSS), the last large-scale structure galaxy survey to be undertaken within the umbrella of the...
Jul 28, 2020
Managing the COVID-19 Pandemic across Geography and Demography
What factors drive the growth and decay of a pandemic? Can a study of community differences (in demographics, settlement, mobility, weather, and epidemic history) allow these factors to be identified...
Jul 29, 2020
Non-Hermitian two-level systems with imaginary components in Electronics
The systems having real spectra without being Hermitian are in expansion today in many fields of physics. The most investigated are Parity-Time Symmetric systems. Their Hamiltonians commute with the joint...
Jul 31, 2020
Temperature enhancement of thermal Hall conductance quantization
The quest for non-Abelian quasiparticles has inspired decades of experimental and theoretical efforts. Among their clearest signatures is a thermal Hall conductance with quantized half-integer value. Such a value was...
Aug 04, 2020
The Neutrino Magnetic Moment Portal: Cosmology, Astrophysics, and Direct Detection
We revisit the physics of neutrino magnetic moments, focusing in particular on the case where the right-handed, or sterile, neutrinos are heavier (up to several MeV) than the left-handed Standard...
Aug 11, 2020