- 03-29 T. Bodineau, E. Presutti
- Surface tension and Wulff shape for a lattice model without
spin flip symmetry.
Jan 22, 03
(auto. generated ps),
of related papers
Abstract. We propose a new definition of surface tension and check it in a spin model of the
Pirogov-Sinai class where the spin flip symmetry is broken. We study the model at low
temperatures on the phase transitions line and prove:
(i) existence of the surface tension in the thermodynamic limit, for any orientation
of the surface and in all dimensions $d\ge 2$;
(ii) the Wulff shape constructed with such a surface tension coincides with the
equilibrium shape of the cluster which appears when fixing the total spin
magnetization (Wulff problem).