Abstract: Post-inflationary QCD axion is an
attractive solution to the Strong CP problem because of the
possibility to uniquely predict the axion mass if axion makes up
all of dark matter. On the other hand, QCD axion models often
suffer from the so...
Abstract: String stars, or Horowitz-Polchinski
solutions, are string theory saddles with normalizable condensates
of thermal-winding strings. In the past, string stars were offered
as a possible description of stringy (Euclidean) black holes
in...
Abstract: Abstract: In this talk, I will review the underlying
algebraic structure of de Sitter quasinormal modes (QNMs), and the
relation between QNMs and one-loop quantum corrections to dS
entropy. I will explain how this picture extends to Anti...
Abstract: I will begin by reviewing
gauge/string duality, and in particular the motivations for
understanding this duality better in the case of weakly coupled
gauge theories. I will then discuss work in progress on two
approaches to understanding...
Abstract: I will review why current large
language models cannot deal with algorithmic problems without using
external tools. After explaining the transformer architecture
from a point of view of a physicist, I will highlight the
increasing role of...
Abstract: M- and F-theory compactifications
with ADE singularities give rise to non-abelian ADE gauge
symmetries. The physical explanation for this phenomenon involves
M2-branes wrapped on vanishing cycles. We consider an alternative
approach which...
Abstract: I will briefly review the black hole
information paradox in the powerful formulation of Almheiri,
Marolf, Polchinski and Sully. I discuss some challenges for
complexity-protected black hole complementarity. I suggest a
covariant definition...
