Physics

Abstract: Love numbers quantify how compact objects deform under external tidal fields. They are key gravitational wave observables and provide a direct probe of compact-object structure. At linear order, black hole (BH) Love numbers vanish - a...

Abstract: In large N theories with a gravity dual, generic heavy operators should be dual to black holes in the bulk. The microscopic details of such operators should then be irrelevant in the low energy theory. We look for such universality in the...

This semester, we will be beginning a *very informal* get-together every Monday of people interested in/working on phenomenology and new theories beyond the standard model.  The idea is to discuss over lunch, perhaps meet up around 12.20, grab lunch...

Abstract: In this talk, I will explore a variety of 1+1d lattice models exhibiting anti-unitary symmetries that simultaneously reflect space and reverse time. These symmetries can be anomalous, leading to Lieb-Schultz-Mattis-type constraints that...

Abstract: In recent years, low-dimensional models of gravity have been useful toy models to study deep puzzles of quantum gravity like the black hole information paradox. For two-dimensional JT gravity, a new duality was discovered: JT gravity is...

Abstract: I will discuss the path integral of pure 3D gravity on a finite region of spacetime, with boundary conditions that fix dihedral angles or geodesic lengths. This amplitude calculates corrections to the Gaussian statistics of OPE...

Abstract: I will talk about the adiabatic cycles of one-dimensional gapped Hamiltonians with non-invertible symmetry. Using quasiadiabatic evolution and the results of gapped phase classification, the adiabatic cycles can be classified by the...

Abstract: I will explain how the irreversibility of the renormalization group together with anomalies, including anomalies in the space of coupling constants, can be used to constrain the IR phases of defects in familiar quantum field theories. As...

Abstract: I will review some benefits and consequences of using a Lorentzian gravitational path integral. Time permitting, I will mention some new results on how a Lorentzian path integral ameliorates apparent "entropy paradoxes" in asymptotically...