Video Lectures

We introduce a theoretical framework to study experimental physics using quantum complexity theory. This allows us to address: what is the computational complexity of an experiment? For several 'model' experiments, we prove that there is an...

We take the tensor network describing explicit p-adic CFT partition functions proposed in 1902.01411, and consider boundary conditions of the network describing a deformed Bruhat-Tits (BT) tree geometry. We demonstrate that this geometry satisfies...

 I shall present joint work with Maxim Kontsevich (arXiv:2105.10161) describing an interesting domain of complex metrics on a smooth manifold. It is a complexification of the space of ordinary Riemannian metrics, and has the Lorentzian metrics (but...

What governs whether large-scale planetary habitability is sustained through time? Lakes, valley networks, groundwaters, hydrothermal systems, and chemically open-system weathering once existed on Mars. The suite of aqueous environments preserved in...

Abstract 1: In recent years, weak lensing of the cosmic microwave background (CMB) has emerged as a powerful tool to probe fundamental physics. The prime target of CMB lensing surveys is the lensing potential, which is reconstructed from observed...

I will present the cosmological weak lensing results from the Dark Energy Survey (DES) using its first three years of data, taken on the 4m Blanco telescope at CTIO. This analysis spans the full DES footprint, more than 4000 sq. deg. of sky, with...

Abstract 1: The time delay measured between the images of gravitationally lensed quasars probes a combination of angular diameter distances and the mass profile of the lens. Observational campaigns to measure such systems have reported a...