Tal Orenshtein, HU Berlin: Critical wetting models in 1+1 dimensions (Oberseminar Mathematische Stochastik)
am Mittwoch, 16.05.2018 16:00 im Raum SRZ 205
Wetting models are a class of polymer models enjoying an interplay between two forces
- local (pinning) and global (presence of a hard wall). In 1 + 1 dimensions, the standard
case is completely solved by Deuschel, Giacomin and Zambotti in 2004 and a sharp phase
transition holds. In particular, the asymptotic behavior of the system is drastically different in the sub-critical, the super critical and the critical phases, where in the latter case
the limiting path is the re
ected Brownian motion. However, in the standard model the
pinning potential has strong singularity at zero. Taking the pinning to be constant on a
strip of fixed size, phase transition and off-critical scaling limits are were proven by Sohier
in 2013. In the talk we shall discuss our recent result on a full path scaling limit of the
strip model so that the strip size is shrinking to zero, where any smooth pinning function
is allowed as long as it is well-approximating the critical value of the standard model.
This is a joint work with Jean-Dominique Deuschel.