Fast radio bursts (FRBs) are a big puzzle in astrophysics.
Observational evidence and theoretical arguments connect FRBs to
magnetars, yet their emission mechanism is not established. One
popular picture resembles pulsars on steroids, with radio...
This talk will present and scrutinize certain structures
underlying what we usually call the semiclassical limit of AdS/CFT:
how families of CFTs develop gravitational regimes at large N; how
their exact high-energy spectra compare to black hole and...
Since the discovery of the Amplituhedron in 2013, positive
geometry has attracted considerable interest in both physics and
mathematics, revealing connections between scattering amplitudes
and cosmological correlators on the one hand, and...
Black holes are detected through a variety of methods, each
revealing a different part of their nature. These include
gravitational-wave emissions that detect compact-object binary
mergers, X-ray radiation that captures dramatic accretion
episodes...
In this talk, I will give an overview of the types of problems I
work on in string phenomenology, with a specific view to how to
relate Calabi-Yau geometry to axions in four dimensions. I'll
discuss the broad-stroke features we find of axions in...
In this talk, I will present a holographic expansion, known as
the giant graviton expansion, of the thermal partition function of
free N=4 super Yang-Mills. We use the twistorial uplift of
self-dual N=4 SYM, which can be engineered in the...
Homotopy theory and category theory have the capability to
provide many insights into the structure of quantum field
theory. Using these tools I will explain a comprehensive
framework for characterizing the infrared (IR) phases of a
fermionic QFTs...
