Workshop "Gauge theories and spin systems: Yang-Mills theory, continuous symmetry, and disorder"

Delocalization for the solid-on-solid model and variants

Aug 1, 2025, 11:00 AM

1h

Poppelsdorfer Allee 45, 1. EG, Lecture room (HIM)

Scheduled Talks

Speaker

Mr Florian Schweiger (Université de Genève)

Description

Integer-valued effective interface models such as the solid-on-solid model arise, for example, when describing the interfaces between different phases in the Ising model. In two dimensions they are expected to have a BKT transition from localized to delocalized behavior as the temperature increases. The existence of a delocalized phase was first shown for various models by Fröhlich and Spencer in the eighties, and in the last few years elegant alternative approaches for special cases have been developed. In the talk I will survey these results, and then describe joint work with Sébastien Ott, where we adapt the method of Fröhlich-Spencer to some new settings.