Strong Mobility in Weakly Disordered Systems
Condensed Matter lunchtime seminar
Strong Mobility in Weakly Disordered Systems
- Event time: 1:00pm
- Event date: 30th July 2009
- Speaker: Eli Ben-Naim (Los Alamos National Laboratory)
- Location: Room 2511, James Clerk Maxwell Building (JCMB) James Clerk Maxwell Building Peter Guthrie Tait Road Edinburgh EH9 3FD GB
Event details
The transport of interacting particles in disordered media will be
discussed. The one-dimensional system includes (i) disorder: the
hopping rate governing the movement of a particle between two
neighboring lattice sites is inhomogeneous, and (ii) hard core
interaction: the maximum occupancy at each site is one particle. Over a
substantial regime, the root-mean-square displacement of a particle is
faster than diffusive whereas without disorder, the displacement is
slower than diffusive. These results are established using scaling
arguments and numerical simulations. Remarkably, disorder speeds up the
transport of interacting particles despite the fact that disorder slows
down non-interacting particles. Therefore, disorder and particle
interactions compete in a non-trivial way. Relevance to transport in
condensed matter systems, colloidal, biological, and microfluidic
channels will be also discussed.
Strong Mobility in Weakly Disordered Systems E. Ben-Naim and P.L. Krapivsky Phys. Rev. Lett. 102, 190602 (2009); arxiv:0902.2762
Strong Mobility in Weakly Disordered Systems E. Ben-Naim and P.L. Krapivsky Phys. Rev. Lett. 102, 190602 (2009); arxiv:0902.2762
About Condensed Matter lunchtime seminars
This is a weekly series of informal talks given primarily by members of the institute of condensed matter and complex systems, but is also open to members of other groups and external visitors. The aim of the series is to promote discussion and learning of various topics at a level suitable to the broad background of the group. Everyone is welcome to attend..