Hopfield neural network
Unusual transport in odd-diffusive systems
Erik Kalz is a PhD student at U Potsdam in the group of Ralf Metzler. The group focuses on nonequilibrium statistical physics and anomalous stochastic processes, with applications to biological and soft matter systems.
Abstract
Odd systems, characterised by broken time-reversal or parity symmetry,
exhibit striking transport phenomena due to transverse responses. In this
talk, I will introduce the concept of odd diffusion, a generalisation of
diffusion in two-dimensional systems that incorporates antisymmetric tensor
components. Focusing on systems of interacting particles, I adapt a
geometric approach to derive effective transport equations and show how
interactions give rise to unusual transport in odd systems. I present
effects like enhanced self-diffusion, reversed Hall drift and even absolute
negative mobility that solely originate in odd diffusion. These results
reveal how microscopic symmetry-breaking gives rise to emergent, equilibrium
and non-equilibrium transport, with implications for soft matter, chiral
active systems, and topological materials.
Welcome to the Week 6 Bulletin!
Please see below for all relevant news and announcements.
To suggest an item for a future Bulletin, please email bulletin@maths.ox.ac.uk.
Born on this day: Russian mathematician Aleksandr Lyapunov
Congratulations on reaching the end of the academic year! Please join us for celebratory drinks and nibbles at The Alchemist (Westgate, Bonn Square, Oxford OX1 1TR) at 19:00-21:00 on Thursday 12th June to chat with our team about life at Optiver, our roles, and the opportunity to make an early application this summer.
Feel free to bring a friend who could be interested in a role in trading, research, or software engineering.
The MSc in Mathematical Sciences (OMMS) is a standalone MSc which runs parallel with Part C and will be taking on its fourth cohort of students in the next academic year. To help the MSc students feel welcome in the department, we have set up a buddy system where an OMMS student will be paired with a current Part B student who's staying on to Part C, so they can communicate over the summer if they choose.
15:00
Nearly G2-structures and G2-Laplacian co-flows.
Abstract
In this talk, we discuss nearly G2 structures, which define positive Einstein metrics, and are, up to scale, critical points of a geometric flow called (modified) Laplacian co-flow. We will discuss a recent joint work with Jason Lotay showing that many of these nearly G2 critical points are unstable for the flow.
15:00
Perturbing circle invariant solution to LMCF in the Eguchi-Hanson space to solutions in the Kummer K3 surface
Abstract
In this talk I will describe a possible strategy to obtain new solution to LMCF in the Kummer K3 surface by a fixed point argument. The key idea is that the regions where curvature concentrates in the Kummer K3 surface are modeled on the Eguchi-Hanson space.