Calculating dynamic structure factors with the real space renormalisation group
- 11 September 1986
- journal article
- Published by IOP Publishing in Journal of Physics A: General Physics
- Vol. 19 (13) , 2637-2662
- https://doi.org/10.1088/0305-4470/19/13/028
Abstract
The authors develop exact methods, based on the real space renormalisation group, for calculating dynamic structure factors of Heisenberg ferromagnets. The method is applied to a pure chain, a Sierpinski gasket and a quasi-one-dimensional model of a dilute chain. The result for the Sierpinski gasket exhibits a rich structure because of the requirement of discrete scale invariance. By the use of the distribution scaling the method is generalised to treat a randomly diluted chain.Keywords
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