Effect of gauge-field interaction on fermion transport in two dimensions: Hartree conductivity correction and dephasing
@article{Ludwig2008EffectOG, title={Effect of gauge-field interaction on fermion transport in two dimensions: Hartree conductivity correction and dephasing}, author={Thomas Ludwig and Igor V. Gornyi and Alexander D. Mirlin and Peter Woelfle}, journal={Physical Review B}, year={2008}, volume={77}, pages={235414} }
We consider the quantum corrections to the conductivity of fermions interacting via a Chern-Simons gauge field, and concentrate on the Hartree-type contributions. The first-order Hartree approximation is only valid in the limit of weak coupling \lambda to the gauge field, and results in an antilocalizing conductivity correction, \sim \lambda^2 g \ln^2 T (g is the conductance). In the case of strong coupling, an infinite summation of higher-order terms is necessary, including both the virtual…
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