Confinement Phase in Carbon-Nanotubes and the Extended Massive Schwinger Model

Details Confinement Phase in Carbon-Nanotubes and the Extended Massive Schwinger Model Confinement Phase in Carbon-Nanotubes and the Extended Massive Schwinger Model

2010-07-30

arxiv.org/abs/1007.5393v3

Physics

Condensed Matter

Strongly Correlated Electrons

5 pages, 3 figures

Scientific paper

Carbon nanotube with electric fluxes confined in one dimension is studied. We show that a Coulomb interaction \propto |x| leads to a confinement phase with many properties similar to QCD in 4D. Low-energy physics is described by the massive Schwinger model with multi-species fermions labeled by the band and valley indices. We propose two means to detect this state. One is through an optical measurement of the exciton spectrum, which has been calculated via the 't Hooft-Berknoff equation with the light-front field theory. We show that the Gell-Mann-Oakes-Renner relation is satisfied by a dark exciton. The second is the nonlinear transport which is related to Coleman's "half-asymptotic" state.

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