Superdiffusive nonequilibrium motion of an impurity in a Fermi sea

Details Superdiffusive nonequilibrium motion of an impurity in a Fermi sea Superdiffusive nonequilibrium motion of an impurity in a Fermi sea

2012-01-05

arxiv.org/abs/1201.1055v2

Phys. Rev. A 85, 043603 (2012)

Physics

Condensed Matter

Quantum Gases

5 pages, 1 figure, to appear in Phys. Rev. A

Scientific paper

10.1103/PhysRevA.85.043603

We treat the nonequilibrium motion of a single impurity atom in a low-temperature single-species Fermi sea, interacting via a contact interaction. In the nonequilibrium regime, the impurity does a superdiffusive geometric random walk where the typical distance traveled grows with time as $\sim t^{d/(d+1)}$ for the $d$-dimensional system with $d\geq 2$. For nonzero temperature $T$, this crosses over to diffusive motion at long times with diffusivity $D\sim T^{-(d-1)/2}$. These results apply also to a nonzero concentration of impurity atoms as long as they remain dilute and nondegenerate.

Affiliated with

Also associated with

No associations

Rating

Superdiffusive nonequilibrium motion of an impurity in a Fermi sea does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Superdiffusive nonequilibrium motion of an impurity in a Fermi sea, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Superdiffusive nonequilibrium motion of an impurity in a Fermi sea will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-609049