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Author Bellazzini, Brando ♦ Mintchev, Mihail ♦ Sorba, Paul
Source arXiv.org
Content type Text
File Format PDF
Date of Submission 2010-02-01
Language English
Subject Domain (in DDC) Computer science, information & general works ♦ Natural sciences & mathematics ♦ Mathematics ♦ Physics
Subject Keyword High Energy Physics - Theory ♦ Condensed Matter - Mesoscale and Nanoscale Physics ♦ Condensed Matter - Strongly Correlated Electrons ♦ Mathematical Physics ♦ math ♦ physics:cond-mat ♦ physics:hep-th ♦ physics:math-ph
Abstract We investigate Luttinger junctions of quantum wires away from criticality. The one-body scattering matrix, corresponding to the off-critical boundary conditions at the junction, admits in general antibound and/or bound states. Their contribution to the theory is fixed by causality. The presence/absence of bound states determines the existence of two different regimes with inequivalent physical properties. A scattering matrix without bound states defines an isolated equilibrium system. Bound states instead drive the system away from equilibrium, giving raise to non-trivial incoming or outgoing energy flows in the junction. We derive in both regimes and in explicit form the electromagnetic conductance tensor, pointing out the different impact of bound and antibound states.
Description Reference: Phis.Rev. B82 (2010) 195113
Educational Use Research
Learning Resource Type Article
Page Count 9


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