I will discuss two methods for diagnosing ’t Hooft anomalies of
internal symmetries in 2+1d lattice systems. Anomalous symmetries
of this kind arise naturally at the boundary of 3+1D
symmetry-protected topological phases, and are known to be...
The Gaiotto-Moore-Witten "Algebra of the Infrared" allows one to
construct the category of supersymmetric boundary conditions for a
wide class of massive N=(2,2) QFTs in two dimensions. In
particular, it applies to N=(2,2) QFTs defined by a Morse...
While the vast majority of the light from our galaxy comes from
the Galactic disk, the vast majority of the mass of the Milky Way
(MW) is in its dark matter halo. Because we cannot directly observe
the MW's dark matter halo, we must use luminous...
In this talk I will discuss holographic duals of topological
operators. At low energy sugra, they can be realized by Page
charge associated to Gauss law constraints. In the UV string
theory, topological operators can be characterized by
various...
Recent observations reveal that cosmic rays (CRs) are more
tightly confined in various astrophysical systems (e.g. radio
bubbles) than current theories predict. I show that microscale
magnetic fluctuations, particularly from the mirror
instability...
Quantum critical points usually separate two distinct phases of
matter. Here I will discuss a class of "unnecessary" quantum
critical points that lie within a single phase of matter (much like
the liquid-gas transition, except that they are...
I will discuss a new method for analyzing the morphology of
supernova remnants (SNRs) by using power specula analysis to
diagnose the drivers responsible for structure at different angular
scales. Using a suite of hydrodynamic models of the Rayleigh...
I will describe constructions of lattice field theories that
assign a single bosonic variable to each site, rather a conjugate
pair x,p. The information to realize a non-trivial dynamics is
realized by non-trivial Poisson brackets between nearest...
The Miura transformation is a powerful formalism to construct
generators of vertex operator algebras in free field
representation. In this talk, I will explain that Miura operators
are R-matrices of a certain quantum algebra, and comment on
physical...
