Semiclassical description of Heisenberg models via spin-coherent states

URN to cite this document:: urn:nbn:de:bvb:355-epub-282671
DOI to cite this document:: 10.5283/epub.28267

Schliemann, John ; Mertens, Franz G.

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Date of publication of this fulltext: 24 May 2013 11:48

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Abstract

We use spin-coherent states as the basis of a time-dependent variational ansatz for a semiclassical description of a large family of Heisenberg models. In addition to following common approaches we also evaluate the square variance of the Hamiltonian in terms of coherent states. This quantity turns out to have a natural interpretation with respect to time-dependent solutions of the equations of ...