| Speaker: |
José Matos (University of Porto) |
| Title: |
Effective strings and particles interacting in 3D: the Ising model |
| Date (JST): |
Tue, Mar 10, 2026, 15:30 - 17:00 |
| Place: |
Seminar Room A |
| Abstract: |
We study how a fluctuating domain wall in three dimensions modifies bulk correlation functions in a gapped phase. This leads us to introduce an effective coupling $\lambda$ that characterizes the interaction between the wall and the lightest bulk massive particle. We compute several observables in terms of the dimensionless coupling $\lambda$. Namely, one-point and two-point functions in the presence of a toroidal domain wall on a 3d torus, finite transverse volume corrections to the free-energy and particle scattering on the wall. We test our predictions with lattice simulations of the Ising model on a 3d torus with anti-periodic boundary conditions along one direction.
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