Classical and quantum Brownian motors
نویسندگان
چکیده
Peter Hänggi∗1, Fabio Marchesoni2, and Franco Nori3,4 1 Universität Augsburg, Institut für Physik, Universitätsstrasse 1, 86135 Augsburg, Germany 2 Dipartimento di Fisica, Università di Camerino, 62032 Camerino, Italy 3 Frontier Research System, The Institute of Physical and Chemical Research (RIKEN), Wako-shi, Saitama, 351-0198, Japan 4 Center for Theoretical Physics, Department of Physics, University of Michigan, Ann Arbor, MI 481091120, USA
منابع مشابه
Quantum features of Brownian motors and stochastic resonance.
We investigate quantum Brownian motion sustained transport in both, adiabatically rocked ratchet systems and quantum stochastic resonance (QSR). Above a characteristic crossover temperature T(0) tunneling events are rare; yet they can considerably enhance the quantum-noise-driven particle current and the amplification of signal output in comparison to their classical counterparts. Below T(0) tu...
متن کاملPhysics at the Fmqt'04 Conference
This paper summarizes the recent state of the art of the following topics presented at the FQMT'04 conference: Quantum , mesoscopic and (partly) classical thermodynamics; Quantum limits to the second law of thermodynamics; Quantum measurement; Quantum decoherence and dephasing; Mesoscopic and nano-electro-mechanical systems; Classical molecular motors, ratchet systems and rectified motion; Quan...
متن کاملTransport of Forced Quantum Motors in the Strong Friction Limit∗
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 investi...
متن کاملBrownian motors: noisy transport far from equilibrium
Transport phenomena in spatially periodic systems far from thermal equilibrium are considered. The main emphasize is put on directed transport in so-called Brownian motors (ratchets), i.e. a dissipative dynamics in the presence of thermal noise and some prototypical perturbation that drives the system out of equilibrium without introducing a priori an obvious bias into one or the other directio...
متن کاملd - 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 ∗
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 investi...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
دوره شماره
صفحات -
تاریخ انتشار 2004