ISSN:
1573-0530
Keywords:
82B20
;
82B41
;
82B28
;
random walk
;
block spin transformation
;
trimming
Source:
Springer Online Journal Archives 1860-2000
Topics:
Mathematics
,
Physics
Notes:
Abstract We obtain new upper bounds of critical temperatures of N-vector (Heisenberg) models. We apply a transformation of block spin type to random walk representations of the spin models, which was developed by Fröhlich et al. more than a decade ago. Though the transformation is applied just one time, the upper bounds are considerably improved.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00343198