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Axions may be produced thermally inside the cores of neutron stars
(NSs), escape the stars due to their weak interactions with matter,
and subsequently convert into X-rays in the magnetic fields
surrounding the NSs. I will describe a hard X-ray...
I will discuss topological classification of gapped many-body
Hamiltonians and their ground states in dimension d. In general,
the problem is too hard as it includes diverse phenomena such as
degenerate ground states on the torus, anyons, and...
We will prove a conjecture [1] on upper bound of asymptotic gap in
dimension in unitary compact 2D CFT, proving it to be 1 using a
"extremal" function [2]. The notion of asymptotic gap can be
generalized to (h, \bar{h}) plane [3]. We will discuss...
I will introduce a new discrete transformation in quantum field
theory with Z2 1-form symmetry, with some applications to
boson/fermion dualities in (2+1)d.
This is based on the work https://arxiv.org/abs/1909.07383with
Shu-Heng Shao (IAS).
