Abstract: We add non-linear and state-dependent
terms to the Hamiltonian of quantum field theory. The resulting
low-energy theory, non-linear quantum mechanics, is causal,
preserves probability and permits a consistent description of the
process of...
Abstract: In four-dimensional
asymptotically flat spacetimes, the infinite tower of soft graviton
modes is known to generate a w(1+infinity) symmetry algebra at
tree-level. In this talk, I will review this symmetry and
demonstrate that it acts non...
Abstract: I will review recent progress in
understanding perturbative corrections to the large N limit of
various observables in holographic 3d SCFTs. For supersymmetric
observables, these corrections are obtained from supersymmetric
localization...
Abstract: It was recently shown that
the von Neumann algebras of observables gravitationally dressed to
the mass of a Schwarzschild-AdS black hole or an observer in de
Sitter spacetime are Type II, and thus admit well-defined traces.
The von...
Abstract: A black hole, when observed from
outside, can be represented as a quantum system of microstates. For
AdS black holes, the microstates are dual to operators in the
boundary CFT by the AdS/CFT correspondence. In this talk, I will
discuss the...
Abstract: The irreversibility of RG flows
on conformal defects has been a subject of great interest recently.
In this talk I will present an entropy function defined on 2D
spherical defects, interpolating between the defect anomaly
coefficient at...
Abstract: For certain black hole
spacetimes, we are fortunate to have three complementary views of
the same physics: (1) the low-energy gravity theory on the
spacetime M, (2) worldsheet string theory with target space M, and
(3) a holographic...
Abstract: The towers of massive states in
quantum gravity are ubiquitous and highly constrained. I will
review some of the Swampland conjectures, known as distance
conjectures, that quantify the universal behaviors of such towers
in string theory...
Abstract: Recently, the notion of symmetry
has been generalized by relaxing the codimensions, invertibility
and topologicalness of the symmetry operators. In this talk, I will
introduce a new generalization, subsystem non-invertible symmetry,
by...
