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arXiv · 1311.6959

Functions Characterizing the Ground State of the XXZ Spin-1/2 Chain in the Thermodynamic Limit

Maxime Dugave·Frank Göhmann·Karol K. Kozlowski
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Abstract

We establish several properties of the solutions to the linear integral equations describing the infinite volume properties of the XXZ spin-1/2 chain in the disordered regime. In particular, we obtain lower and upper bounds for the dressed energy, dressed charge and density of Bethe roots. Furthermore, we establish that given a fixed external magnetic field (or a fixed magnetization) there exists a unique value of the boundary of the Fermi zone.

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Maxime Dugave, Frank Göhmann, Karol K. Kozlowski. 2014-04-11. Functions Characterizing the Ground State of the XXZ Spin-1/2 Chain in the Thermodynamic Limit. https://doi.org/10.3842/sigma.2014.043

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