Abstract: Dispersion relations for four-point
scattering amplitudes explicitly display how the particle content
of a theory affects its physical observables and highlight how
physical requirements like unitarity, causality, and locality
place...
Abstract: Fusion surface models, as
introduced by Inamura and Ohmori, extend the concept of anyon
chains to 2+1 dimensions, taking fusion 2-categories as their
input. In this talk, I will focus on fusion surface models
constructed from braided...
Abstract: I will present several results on
linear and nonlinear models, relating to the problem of
stability/instability of the exterior region (up to and including
the event horizon) of extremal Reissner-Nordstrom black hole
spacetimes.
Abstract: A sharp definition of what
“adiabatic” means is given; it is then shown that the
time-dependent expectation value of a quantum-mechanical observable
in the adiabatic limit can be expressed— in many cases—by means of
the appropriate Berry...
Abstract: String theory offers a unique
perspective on concrete questions about the nature of quantum
gravity. I will review how such questions can be formulated in
terms of the string theory S-matrix at high energies. Attempts to
sharpen the S...
Abstract: The detection of Gravitational Waves
(GWs) from binary black hole coalescences offers a powerful tool
for exploring the strong-field regime of General Relativity (GR).
To ensure the reliability of these tests, it is essential to
identify...
Abstract: The Balitsky-Kovchegov (BK) equation
describes the high-energy growth of gauge theory scattering
amplitudes and the nonlinear saturation effects that stop it. In
this talk, I will elaborate on a new framework to derive loop
corrections to...
