Jacob Schach Moeller
Low-temperature localization for continuous spin-systems
(105K, amstex)

ABSTRACT.   We study the free energy of continuous spin-systems on 
$\Bbb Z^d$, in the framework of Laplace integrals and transfer 
operators. Under a weak coupling condition, we show that the free 
energy in the low-temperature limit is determined, up to an 
exponentially small error, by the restriction to a neighbourhood 
of global minima of the energy. We have results for some single- 
and double-well problems.