On the probability of staying above a wall for the (2+1)-dimensional SOS model at low temperature

Abstract

We obtain sharp asymptotics for the probability that the (2+1)-dimensional discrete SOS interface at low temperature is positive in a large region. For a square region $\Lambda$, both under the infinite volume measure and under the measure with zero boundary conditions around $\Lambda$, this probability turns out to behave like $\exp (-{\tau }_{\beta }(0)L\log L)$, with ${\tau }_{\beta }(0)$ the surface tension at zero tilt, also called step free energy, and $L$ the box side. This behavior is qualitatively different from the one found for continuous height massless gradient interface models.

21 pages, 6 figures

References in corpus (1)

• Localization and delocalization of random interfaces

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