Conveners
Gong show talks
- Tommy Smith (IPPP)
Description
5-minute talks session
In this talk, we shall discuss the finite temperature physics of a magnetohydrodynamic chiral plasma. This can be understood as a system with an axial $U(1)_A$ current that is afflicted by an Adler-Bell-Jackiw (ABJ) anomaly, where the corresponding vector $U(1)_V$ current has been coupled to dynamical electromagnetism. In modern language, the system has a 1-form global symmetry associated with...
In this talk I will present my work implementing QED real corrections in the Sherpa event generator.
Using the Catani-Seymour dipole formalism, a kT-ordered QED parton shower was constructed. The correct radiation pattern was obtained by applying negative weights to same-charge dipoles using the existing framework for applying analytic weights in the veto algorithm. Results are presented for...
The aim of this talk is to give the audience some understanding of Generalised Geometry and how it helps with the study of supergravity backgrounds in string theory and M-theory. I will set the stage by looking at a toy model of a 2 dimensional background spacetime with a GL(2, R) structure group before discussing a more realistic supergravity background with a non-trivial NS − NS flux. I will...
Asymmetric dark matter (ADM) that is captured in the Sun can act as an efficient conductor of heat, causing observable modifications to properties of the Solar interior. The two formalisms commonly used to parametrise this phenomenon were developed over 30 years ago, and calibrated on single set of simulations. In this talk, I will present the results of new state-of-the-art Monte Carlo...
With no Monte Carlo safety net, a proper understanding of the strong coupling dynamics of chiral gauge theories remains elusive. I will present some possible non-supersymmetric dualities between chiral/vector-like theories and comment its implications.
We can use the scattering equations to describe and relate amplitudes from different theories, exposing hidden relations between them such as the double copy. These have now been generalised to describe some amplitudes outside flat space, in particular in de Sitter and Anti-de Sitter. I will briefly highlight and motivate some of these developments and talk about the parallels to flat space amplitudes.
Primordial black holes (PBHs) are not only a fascinating dark matter candidate, but, if detected, they would also be a probe of the very early universe. For these reasons, PBHs have been an object of study for decades and have been considered in multiple scenarios. We are currently studying their properties and evolution in braneworlds. PBHs with masses below a critical value differ from their...
Causal Set Theory (CST) is an approach to quantum gravity which asserts that spacetime is fundamentally a locally finite partially ordered set that encodes a causal ordering between elements. In this theory, the continuous manifold is simply an emergent phenomenon, with the discreteness of spacetime becoming significant at the Planck scale. In this talk I will review the causal sets programme,...
