Abstract: Fusion 2-categories offer a higher
dimensional generalization of the category of symmetries in (1+1)d.
I will explain how to leverage fusion 2-categories in a special
case and apply them to understand the categorical structure of
(3+1)d...
Abstract: I will focus on fermionic fusion
2-categories, with an emphasis on the supercohomology theory that
is needed to describe them. Then I will explain as much as possible
about how they are used to classify 3+1d fermionic topological
orders.
Abstract: This will be a mini-talk to explain
the following. In a Euclidean path integral on a manifold X with
many boundaries, which boundaries are associated with bras and
which with kets? In a theory with no time-reversal symmetry, the
answer...
Abstract: Understanding quantum gravity in
a closed universe is a long standing problem, where it is
challenging even to discuss what observables are meaningful,
particularly when thinking about dynamics. Indeed, most discussions
in de Sitter are in...
Abstract: The overall goal of this series of
talks is to introduce a categorical framework where fusion
2-categories can be used to understand topological theories in
3+1d. in this first talk I will give an introduction to fusion
2-categories in the...
Abstract: With the advent of next-generation
multi-messenger observatories, multi-messenger events will offer
unprecedented opportunities to address profound questions in black
hole physics, heavy element nucleosynthesis, jet dynamics,
cosmic...
Abstract: Recent advancements in
generalized symmetries have drawn significant attention to gapped
phases of matter exhibiting novel symmetries, such as noninvertible
symmetries. By leveraging the duality transformations, the
classification and...
Abstract: In this talk, I will explain how to
study string perturbation theory of the Klebanov-Strassler solution
in the large radius approximation based on open-closed superstring
field theory. Combining the large radius expansion and a
double...
Abstract: The James Webb Space Telescope
was called the "First Light Machine" when it was being studied as a
potential NASA mission. It quickly became obvious that it
would be impossible to prove that the "first" galaxy had been seen,
but much more...
