Tricritical phenomena in the Blume-Capel model.
Speaker: Trishen Gunaratnam (Université de Genève)
| Speaker |
Speaker: Trishen Gunaratnam (Université de Genève)
|
|---|---|
| When |
Dec 20, 2023
from 04:00 PM to 05:00 PM |
| Where | Online via Zoom |
| Add event to calendar |
vCal
iCal
|
Abstract: The Blume-Capel model is a ferromagnetic spin model that was introduced in the '60s to model an exotic phase transition in uranium dioxide. Mathematically speaking, it is an Ising model coupled to a site percolation, combining two of the most beautiful models in statistical physics. It has a line of critical points - the Curie temperatures whereby the magnetisation-demagnetisation transition occurs. Along this critical line, the model is expected to undergo a further phase transition at the so-called tricritical point. Despite many fascinating physics conjectures concerning the tricritical universality class, there are few rigorous results. In this talk, I will discuss these conjectures and touch upon recent results joint with Dmitry Krachun (Princeton University) and Christoforos Panagiotis (University of Bath) in establishing the existence of a tricritical phenomenon in all dimensions.
Join Zoom Meeting
https://zoom.us/j/98423780582?pwd=ZUxlemd4VXJGT1o4WEhyNE1wbTVUUT09
Meeting ID: 984 2378 0582
Passcode: 494702