From measurements to quantum friction

S M Barnett, J Jeffers, J D Cresser

Research output: Contribution to journalArticlepeer-review

11 Citations (Scopus)


We present a quantum theory of friction in which interactions with the surrounding medium are described by generalized measurements of the particle's position and momentum. The theory predicts intrinsically quantum contributions to the particle's steady-state energy and to the associated diffusion in position. We discuss the physical significance of these and demonstrate their significance in ensuring a well behaved theory.

Original languageEnglish
Pages (from-to)S401-S410
Number of pages10
JournalJournal of Physics: Condensed Matter
Issue number16
Publication statusPublished - 26 Apr 2006


  • brownian-motion
  • master equation
  • dynamical semigroups
  • atomic systems
  • dissipation


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