11:00
Wilson-Ito diffusions
Abstract
In a recent preprint, together with Bailleul and Chevyrev we introduced a class of random fields which try to model the basic properties of quantum fields. I will try to explain the basic ideas and some of the many open problems.
To read the preprint, please click here.
Mattia Magnabosco, Royal Society Research Fellow working with Andrea Mondino in Geometry: S2.47
Balint Koczor, Senior Research Fellow in Quantum Information Theory in Mathematical Physics: N2.07
Emma Cox, AMSP Area Coordinator: S0.21
Bethany Wolfe, Conference and Events Assistant (Apprentice): S0.42
Georgia Brennan, InFoMM Doctoral Prize Research Associate working with Alain Goriely in OCIAM: S3.15
Oxbikes utilises bike mechanics, who work on a supply of locally sourced bicycles to provide an environmentally sustainable bike sales and rental service, with bicycles available 24/7 online and from the central Oxford and college depots.
The service has seen a good uptake over the last year, and is providing a 10% start of year discount on all recycled bike sales and rentals using the code: MPLSHT24.
12:00
Geometric action for extended Bondi-Metzner-Sachs group in four dimensions
Abstract
This will be an informal discussion seminar based on https://arxiv.org/abs/2211.07592:
The constrained Hamiltonian analysis of geometric actions is worked out before applying the construction to the extended Bondi-Metzner-Sachs group in four dimensions. For any Hamiltonian associated with an extended BMS4 generator, this action provides a field theory in two plus one spacetime dimensions whose Poisson bracket algebra of Noether charges realizes the extended BMS4 Lie algebra. The Poisson structure of the model includes the classical version of the operator product expansions that have appeared in the context of celestial holography. Furthermore, the model reproduces the evolution equations of non-radiative asymptotically flat spacetimes at null infinity.
Mathematrix: Standing up for your Rights
Abstract
We will be joined by Tim LaRock, president of the UCU, to talk about everything money and work related, and how these issues intersect with being a minority. Lunch will be provided.