Abstract: I will present the problem of
building local AdS bulk observables from boundary CFT data.
Focusing on QFTs coupled to a rigid AdS background, we study the
analyticity constraints that bulk locality imposes on
bulk-boundary-boundary 3-point...
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...
