This is joint work with Clément Dupont. Motivated by
double-copy (Kawai-Lewellen-Tye) formulae relating open and
closed superstring amplitudes at tree-level, I will explain a
general double-copy formula for period integrals on algebraic
varieties...
Powerful extragalactic radio sources hosted in galaxies come in
all shapes, sizes, powers, and presumably ages. What might a
young or nascent powerful radio source look like? The class
of compact powerful extragalactic radio sources are defined
to...
A new class of phase transitions has been recently studied in
quantum many-body systems that are subject to measurements but not
otherwise open to any external decoherence. This phase
transition arises from a competition between scrambling
dynamics...
Lightray operators have played an important role in
numerous recent developments in conformal field theory. These
operators, and their associated operator product expansion (OPE),
also play a central role in collider experiments, where they
govern...
We revisit the computation of string correlation functions in
AdS3 with pure NS-NS flux from a worldsheet point of view. These
correlators contain all the perturbative information about the
spacetime CFT and the existence of winding strings in AdS3...
Conformal Field Theories (CFTs) have rich dynamics in heavy
states. We describe the constraints due to spontaneously broken
boost and dilatation symmetries in such states. The spontaneously
broken boost symmetries require the existence of new low...
We will discuss emergent global symmetries, anomalies, and
dualities in various lattice models and their continuum field
theories. These include the ordinary XY model and some exotic
models related to fractons. We will find that many properties
that...
Supported by new observational capabilities, some of our basic
concepts in Milky Way research have changed over the last several
years. Our growing appreciation of the central bar of the Milky
Way, the radial migration of stars, the Galactic thick...
Since the first detection of a gravitational wave event of the
merger of two neutron stars in 2017, two more detections in the
neutron star mass range have been announced. The first one,
GW190425, involved an unusually massive neutron star, the...
