Conference

Interference is one of the most universal phenomena in nature, as exemplified by the real-time Feynman path integral. Despite the ubiquity of interference patterns, their evaluation has often proven challenging. This is especially apparent when considering lensing in astrophysics in the wave optics…

We present new solutions for Turok's complex semi-classical trajectories approach to path integral quantization. New results for the barrier, step potential and double well point to new experimentally testable eigenstates of tunneling, with implications for optics and quantum gravity.

We are entering an exciting era in cosmology, with tantalizing hints of dynamical dark energy. While current data are not sufficient to fully characterize its nature, they may already offer clues about its microphysical properties. Assuming that the latest observations (DESI BAO + SNe Ia + CMB) are…

The cosmic microwave background (CMB) serves as a unique backlight for tracing the growth of cosmic structures. By measuring arc-minute-scale deflections experienced by CMB photons due to gravitational lensing, we can map matter distributions at high redshifts. This lensing signal provides a…

Galaxy positions and shapes, as tracers of the large-scale structure of the Universe, are key observables for testing cosmological models in the late Universe and into the non-linear regime. In this context, multi-scale baryonic dynamics, and their evolution over time, can have considerable effects…

The three-dimensional galaxy power spectrum is a powerful probe of local primordial non-Gaussianity (PNG) and linear-order general relativistic (GR) effects on ultra-large scales, accessible to current large-scale structure surveys. In this talk, we present our calculation of GR effects in the…

Recent years have seen remarkable progress in the exploration of black holes in the early Universe, including the discovery of hundreds of accreting black holes within the first few billion years after the Big Bang. Many of these distant objects do not appear to be simple extrapolations of the local…

Observations by JWST have indicated the presence of large SMBH within the first 500 Myr of the universe. The existence of these black holes require the BH seeds to grow faster than allowed by the Eddington limit. In this talk I will consider the growth of these black holes if a small component of…

Observations of the cosmic microwave background and galaxy clustering are putting increasing pressure on the standard cosmological model, with surprising implications for massive neutrinos, dark energy, and nonminimal dark sectors more generally. I will present a general description of the tension…

In this talk, I will describe how DESI’s precise measurements of the large-scale galaxy distribution test our understanding of the standard cosmological model and probe the Universe’s initial conditions. First, I will show how DESI can measure the Hubble constant in several different ways…

The Dark Energy Spectroscopic Instrument (DESI) is mapping the large-scale structure of the Universe with unprecedented precision, opening a new window on cosmic expansion and the growth of structure. In this talk, I will give a brief introduction to the DESI survey and highlight recent results from…

Over the last few years it has been understood that black holes sufficiently close to extremality receive large quantum corrections that modify their thermodynamic properties. In this talk I will explain how these large quantum corrections modify the real time dynamics of near-extremal black holes…