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20 April 2024

» arxiv » cond-mat/0507312

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Crossed spin-1/2 Heisenberg chains as a quantum impurity problem
S. A. Reyes ; A. M. Tsvelik ;
Date:	13 Jul 2005
Subject:	Strongly Correlated Electrons \| cond-mat.str-el
Abstract:	Using equivalencies between different models we reduce the model of two spin-1/2 Heisenberg chains crossed at one point to the model of free fermions. The spin-spin correlation function is calculated by summing the perturbation series in the interchain coupling. The result reveals a power law decay with a nonuniversal exponent.
Source:	arXiv, cond-mat/0507312
Other source:	[GID 22984] pmid16383927
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