TY - JOUR
T1 - Diffusion of periodically forced brownian particles moving in space-periodic potentials
AU - Gang, Hu
AU - Daffertshofer, A.
AU - Haken, H.
PY - 1996/6/24
Y1 - 1996/6/24
N2 - The diffusion properties of overdamped particles moving in spatially symmetrical periodic potentials subject to both symmetrical time-periodic driving and stochastic forcing are investigated [the typical model formally reads x = -V′(x) + U(t) + Γ(t), V(L ± x) = V(x), U(T + t) = U(t), 〈Γ(t)〉 = 0, 〈Γ(t)Γ(τ)〉 = 2Dδ(t - τ)]. It is found that the diffusion rate can be greatly enhanced if the various forcings are chosen in an optimal matching. In particular, we may get a diffusion rate larger than the rate of free diffusion.
AB - The diffusion properties of overdamped particles moving in spatially symmetrical periodic potentials subject to both symmetrical time-periodic driving and stochastic forcing are investigated [the typical model formally reads x = -V′(x) + U(t) + Γ(t), V(L ± x) = V(x), U(T + t) = U(t), 〈Γ(t)〉 = 0, 〈Γ(t)Γ(τ)〉 = 2Dδ(t - τ)]. It is found that the diffusion rate can be greatly enhanced if the various forcings are chosen in an optimal matching. In particular, we may get a diffusion rate larger than the rate of free diffusion.
UR - http://www.scopus.com/inward/record.url?scp=6244258011&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=6244258011&partnerID=8YFLogxK
U2 - 10.1103/PhysRevLett.76.4874
DO - 10.1103/PhysRevLett.76.4874
M3 - Article
AN - SCOPUS:6244258011
SN - 0031-9007
VL - 76
SP - 4874
EP - 4877
JO - Physical Review Letters
JF - Physical Review Letters
IS - 26
ER -
