Abstract: We will review some recent work
with M. Beccaria and S. Giombi on checking AdS/CFT duality by
reproducing certain supersymmetric localization results in 3d
superconformal Chern-Simons-matter (ABJM) theory
by semiclassical quantization...
Abstract: Earlier this year NANOGrav, along
with other pulsar timing arrays, announced strong evidence for a
stochastic gravitational wave (GW) background at nanohertz
frequencies. For decades, such a signal has been predicted
from binaries of...
Abstract: I will discuss a new holographic
duality between a 1d theory, the q-Schwarzian, and certain 2d
dilaton gravity theories. This q-Schwarzian is a one parameter
deformation of the well known Schwarzian theory. For real values of
q, upon...
Abstract: The Bardeen-Cooper-Schrieffer (BCS)
theory of superconductivity described all superconductors until the
1986 discovery of the high-temperature counterpart in the cuprate
ceramic materials. This discovery has challenged conventional
wisdom...
Abstract: In this talk, I will first review the
proposal by Daniel Jafferis and Lampros Lamprou about the
reconstruction of a bulk infalling observer in terms of modular
flow (see 2009.04476), and then apply this proposal to SYK model in
thermofield...
Abstract: I will consider the quantum
fields along an observer's worldline to define a background
independent algebra in quantum gravity. The talk is
based on a paper with the same title (arXiv:2308.03663).
Abstract: Introduced in the mid-50s, crossing
symmetry in interacting quantum field theory suggests that
particles and anti-particles traveling back in time are
indistinguishable. This perspective has significant practical
implications for...
Abstract: Instantons are an important source of
nonperturbative effects in quantum field theories, but their role
in asymptotically free theories has not been well understood. In
this talk, we will present a new approach to instanton analysis in
the...
Abstract: General relativistic ray tracing
and radiative transfer (GRRT) are numerical techniques for
simulating images of black holes. They have played an
instrumental role in both predicting and interpreting the horizon
scale resolution images...
