In this talk I will discuss the problem of stochastic quantisation of Parisi-Wu in the context of Yang-Mills (YM) theories. I will present several works which make sense of the YM Langevin dynamic on the 2D and 3D torus in a way that respects the underlying gauge symmetries. I will particularly focus on a recent result that the 2-dimensional Euclidean YM measure is invariant for its associated dynamic. I will describe some steps in the proof of this result, which is based on lattice approximations and Bourgain’s globalisation argument. A novelty of the approach is in the use of geometric arguments to show uniqueness of the limiting continuum dynamic. I will also present some consequences, including universality and regularity properties of the 2D YM measure, and discuss the challenges in extending the result to 3 dimensions. Based on joint works with Ajay Chandra, Martin Hairer, and Hao Shen.
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The invariant measure of the 2D Yang-Mills Langevin dynamic
Research Group:
Speaker:
Ilya Chevyrev
Institution:
University of Edinburgh
Schedule:
Thursday, April 11, 2024 - 14:00 to 16:00
Location:
A-133
Abstract:
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