Abstract: Using the modified Villain
lattice Hamiltonian formulation of the 1+1d compact boson theory,
we construct exactly solvable abelian chiral lattice gauge theories
in two spacetime dimensions. As a concrete example, we derive an
explicit...
Abstract: The Swampland Cobordism conjecture
asserts that in quantum gravity, any spacetime can terminate, i.e.,
the cobordism group of quantum gravity is trivial. A striking
consequence of this conjecture is that it predicts the existence
of...
Abstract: For Pauli stabilizer codes—such as
surface codes and color codes—transversal logical gates are
strongly constrained by the Bravyi–König bound. In particular,
implementing a non-Clifford gate transversally (as required for
universality)...
Abstract: The theory of compact-object birth
and core-collapse supernovae is now entering a new and productive
phase of rapid insight into themechanism and systematics of
explosion. The panoramic perspective provided by the recent access
to tens of...
Details: Cosmological observables, from the
Lyman-alpha forest to the Milky Way substructure, offer unique
avenues for probing dark matter and neutrino sectors. Moreover,
they often reveal anomalies and tensions that could signal new
physics. I will...
Abstract: It is believed that topologically
ordered gapped local Hamiltonians in 2+1d consisting of commuting
terms may not realize a chiral anyon theory. There is even a
formula that expresses the chiral central charge of the edge theory
as an...
Abstract: We will present a commutation vector
field approach for the solutions to the massless Vlasov equation on
the exterior of a Schwarzschild spacetime, together with extensions
to subextremal Kerr black holes. The approach satisfies two...
Abstract: Category theory has long been a standard language for
TQFTs with discrete valued degrees of freedom (and more recently,
for discrete generalized symmetries). Is the categorical
perspective also useful for more ordinary problems in
physics...
Abstract: I will describe a quantum mechanical model involving
interacting fermions without disorder that has the same low energy
physics as the supersymmetric SYK model. The model is SU(2)
invariant, and the supercharge involves the SU(2) 3j...
