Absence of electron dephasing at zero temperature

Details Absence of electron dephasing at zero temperature Absence of electron dephasing at zero temperature

2001-11-21

arxiv.org/abs/cond-mat/0111398v2

Phys. Rev. B 65, 195123 (2002)

Physics

Condensed Matter

Statistical Mechanics

7 pp., LaTeX, no figs, final version as published

Scientific paper

10.1103/PhysRevB.65.195123

Dephasing of electrons due to the electron-electron interaction has recently been the subject of a controversial debate, with different calculations yielding mutually incompatible results. In this paper we prove, by means of Ward identities, that neither a Coulomb interaction nor a short-ranged model interaction can lead to phase breaking at zero temperature in spatial dimensions d>2.

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