Crossed Spin-1/2 Heisenberg Chains as a Quantum Impurity Problem

11:15 AM–2:15 PM, Wednesday, March 15, 2006
Baltimore Convention Center Room: 320

Sponsoring Unit: GMAG
Chair: Matthew Stone, Oak Ridge National Laboratory

Abstract ID: BAPS.2006.MAR.P23.3

Abstract: P23.00003 : Crossed Spin-1/2 Heisenberg Chains as a Quantum Impurity Problem*

11:39 AM–11:51 AM

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Authors:

Sebastian Reyes
(Brookhaven National Laboratory and Stony Brook University)

Alexei Tsvelik
(Brookhaven National Laboratory)

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 interaction. The result reveals a power law decay with a nonuniversal exponent.

*This research was supported by US DOE under contract No. DE-AC02-98 CH 10886.

To cite this abstract, use the following reference: http://meetings.aps.org/link/BAPS.2006.MAR.P23.3

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Bulletin of the American Physical Society

2006 APS March Meeting

Monday–Friday, March 13–17, 2006; Baltimore, MD

Session P23: Quantum Spin Chains II

Abstract: P23.00003 : Crossed Spin-1/2 Heisenberg Chains as a Quantum Impurity Problem*

Authors:

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