Harmonic perturbations of generalized Heisenberg spin systems
- 21 March 1975
- journal article
- Published by IOP Publishing in Journal of Physics C: Solid State Physics
- Vol. 8 (6), 839-843
- https://doi.org/10.1088/0022-3719/8/6/014
Abstract
A critical exponent associated with arbitrary hyperspherical harmonic perturbations of a generalized Heisenberg spin system is calculated to order epsilon 3 as well as 1/n. Some previous results and many new ones are contained as particular cases. High harmonic interactions are found to be generally irrelevant in the phase transition region, confirming the extent of universality.Keywords
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