Abstract: We study 4d SU(N) pure
Yang-Mills theory with a topological theta-angle. It has been a
long standing problem to study the theta-dependence of the free
energy, and to settle on the fate of the CP symmetry at theta=pi.
In this talk we...
Abstract: We present an extensive study of
the effects of neutrino transport in
3-dimensional general relativistic radiation hydrodynamics (GRHD)
simulations of binary neutron star (BNS) mergers using our
moment-based, energy-integrated neutrino...
Abstract: The TTbar deformation is a
holographic theory describing holography a finite distance in the
bulk. If this theory can be UV completed, it could
be a model of nonperturbative bulk quantum gravity. However,
it seems to be a non-unitary...
Abstract: I use the method of images to derive
the dilaton boundary term of the classical string action in a $Z_2$
orbifold (half space) with Neumann boundary conditions. The
derivation is carried out to first order in alpha prime from
the...
Abstract: In spite of tremendous progress
in mean-field spin glass theory over the last forty years,
“realistic” spin glass models with short-range interactions remain
shrouded in mystery. I will talk about recent progress on this
topic, proving a...
Abstract: We will discuss excitations with
large spin and/or large particle number. For conformal theories
this corresponds to investigating particular trajectories of heavy
operators.
We find trajectories with large approximate degeneracy and
show...
Abstract: The Schwinger model of
two-dimensional quantum electrodynamics is among the oldest and
best-studied quantum field theories, and is attracting renewed
interest in connection with simulations of quantum lattice
Hamiltonians. I will discuss...
Abstract: I will review the status of the duality between type
II string theory on $AdS_3 \times S^3 \times T^4$ and a specific
N=(4,4) supersymmetric 2d CFT. I will begin by reviewing the
understanding of this theory from the late '90s, from the...
Abstract: We study the partition function
of 3D de Sitter gravity defined as the trace over the Hilbert space
obtained by quantizing Schwarzschild-de Sitter spacetime. Motivated
by the correspondence with double scaled SYK, we identify
the...
Abstract: In gravity, spacelike separated
regions can be dependent on each other due to the constraint
equations. I my talk, I will propose a natural definition of
subsystem independence in classical gravity. Next, I show
that extremal surfaces...
