Dephasing at low temperatures

Doron Cohen, Yoseph Imry

Research output: Contribution to journalArticlepeer-review

39 Scopus citations


We discuss the significance and the calculation of dephasing at low temperatures. The particle is moving diffusively due to a static disorder configuration, while the interference between classical paths is suppressed due to the interaction with a dynamical environment. At high temperatures we may use the white-noise approximation, while at low temperatures we distinguish the contribution of zero-point fluctuations (ZPF) from the thermal noise contribution. We study the limitations of the above semiclassical approach and suggest the required modifications. In particular we find that the ZPF contribution becomes irrelevant for thermal motion.

Original languageEnglish
Pages (from-to)11143-11146
Number of pages4
JournalPhysical Review B - Condensed Matter and Materials Physics
Issue number17
StatePublished - 1 Jan 1999
Externally publishedYes

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics


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