Bloch Walls and Macroscopic String States in Bethe’s Solution of the Heisenberg Ferromagnetic Linear Chain

Dhar, Abhishek and Shastry, Sriram B (2000) Bloch Walls and Macroscopic String States in Bethe’s Solution of the Heisenberg Ferromagnetic Linear Chain. In: Physical Review Letters, 85 (13). pp. 2813-16.

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Abstract

We present a calculation of the lowest excited states of the Heisenberg ferromagnet in 1D for any wave vector. These turn out to be string solutions of Bethe’s equations with a macroscopic number of particles in them. They are identified as generalized quantum Bloch wall states, and a simple physical picture is provided for the same.

Item Type:	Journal Article
Publication:	Physical Review Letters
Publisher:	American Physical Society (APS)
Additional Information:	Copyright for this article belongs to American Physical Society (APS)
Department/Centre:	Division of Physical & Mathematical Sciences > Physics
Date Deposited:	22 Aug 2008
Last Modified:	28 Sep 2010 07:23
URI:	http://eprints.iisc.ac.in/id/eprint/81

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