Quantum Brownian Motion Revisited

  • IFISC Colloquium

  • Maciej Lewenstein
  • ICFO and ICREA, Barcelona, Spain
  • June 7, 2017, 9:30 a.m.
  • Auditorium (Gaspar Melchor de Jovellanos building)
  • Announcement file

Brownian motion in an inhomogeneous medium has been
recently studied in the context of classical Brownian motion
(CBM) and other classical diffusive systems. Precisely, explicit
formulas were derived for noise-induced drifts in the
small-mass (Smoluchowski-Kramers and other limits).
In a series of papers we analyzed the microscopic
model of quantum Brownian motion, describing a Brown-
ian particle interacting with a bosonic thermal bath, through
a coupling which is linear in the creation and annihilation
operators of the bath, but may be a nonlinear function of
the position of the particle. Physically, this corresponds to a
configuration in which damping and diffusion are inhomogeneous,
namely they vary in space.


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IFISC Colloquia


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