Electronic Resource
Springer
The European physical journal
86 (1992), S. 139-143
ISSN:
1434-6036
Source:
Springer Online Journal Archives 1860-2000
Topics:
Physics
Notes:
Abstract We study the Heisenberg antiferromagnet in two dimensions on a triangular lattice. Using the coherent state representation for spinS≫1 and performing the spatial continuum limit we arrive at the actionL of a nonlinear σ model. The consituent classical fields ofL are a set of three three-dimensional orthogonal unit vectors. The origin of the symmetrics ofL is uncovered. We investigate this model by a one-loop renormalisation group analysis. In the high temperature limit as well as at zero temperature, the model scales to a fixed point of higher symmetry.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF01323558
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