XOR trick for the Ising model and its graphical representations (Frederik Ravn Klausen, University of Cambridge)

16.02.2026 16:15 – 18:00

Abstract:
Studying the Ising model using its graphical representations has been tremendously successful.
These representations are coupled to each other using the uniform even subgraph, which is invariant under XOR.
This trick enables simple proofs of equality of critical points between loop O(1) and Ising and exponential decay for the two-dimensional near-critical model. The scaling limit of the latter is famously conjectured to be related to the exceptional Lie Algebra E_8. Joint work with Ulrik Hansen, Jiangping Jiang and Peter Wildemann.

Lieu

Bâtiment: Conseil Général 7-9

Room 1-15, Séminaire Math Physics

entrée libre