Dephasing of a particle in a dissipative environment Academic Article uri icon


  • The motion of a particle in a ring of length L is influenced by a dirty metal environment whose fluctuations are characterized by a short correlation distance ℓ Lt L. We analyze the induced decoherence process, and compare the results with those obtained in the opposing Caldeira–Leggett limit (ℓ Gt L). A proper definition of the dephasing factor that does not depend on a vague semiclassical picture is employed. Some recent Monte Carlo results about the effect of finite temperatures on'mass renormalization'in this system are illuminated.

publication date

  • January 1, 2007