d - m at / 0 61 12 77 v 1 [ co nd - m at . s of t ] 1 0 N ov 2 00 6 Transport of Forced Quantum Motors in the Strong Friction Limit ∗
نویسندگان
چکیده
The directed transport of an overdamped Brownian motor moving in a spatially periodic potential that lacks reflection symmetry (i.e. a ratchet potential) is studied when driven by thermal and dichotomic nonequilibrium noise in the presence of an external, constant load force. We consider both, the classical and the quantum tunneling assisted regimes. The current-load characteristics are investigated as a function of the system parameters like the load force, the temperature and the amplitude strength of the applied two-state noise.
منابع مشابه
ar X iv : c on d - m at / 0 31 14 64 v 1 [ co nd - m at . s of t ] 1 9 N ov 2 00 3 Dynamics of nematic elastomers
We study the low-frequency, long-wavelength dynamics of soft and semi-soft nematic elastomers using two different but related dynamic theories. Our first formulation describes the pure hydrodynamic behavior of nematic elastomers in which the nematic director has relaxed to its equilibrium value in the presence of strain. We find that the sound-modes structure is identical to that of columnar li...
متن کاملar X iv : c on d - m at / 0 20 91 97 v 1 [ co nd - m at . s up r - co n ] 9 S ep 2 00 2 Oxygen Phonon Branches
متن کامل
ar X iv : 0 71 1 . 32 82 v 1 [ he p - ph ] 2 1 N ov 2 00 7 Study of Pure Annihilation Decays B d , s → D 0 D 0
With heavy quark limit and hierarchy approximation λ QCD ≪ m D ≪ m B , we analyze the
متن کاملar X iv : c on d - m at / 0 51 12 98 v 2 1 5 N ov 2 00 5 Effective action for vortex dynamics in clean d - wave superconductors
We describe the influence of the gapless, nodal, fermionic quasiparticles of a two-dimensional dwave superconductor on the motion of vortices. A continuum, functional formalism is used to obtain the effective vortex action, after the fermions have been integrated out. At zero temperture (T ), the leading terms in the vortex action retain their original form, with only a finite renormalization o...
متن کاملAmitraz Poisoning; A case study
A m i t r a z, a n i ns e c t i c i d e /a ca ri c i de of the f o r m a m i d i n e p e st i c i d e s group, is a ? 2 a d r e n e r g i c ag on i st a nd of t he a m i d i ne c h e m i ca l f a m il y generally us e d to c o n t r ol animal e c top a r a s i t e s. Poisoning due to am i t r a z i s r a r e and character...
متن کامل