Stochastic resonance and Brownian ratchets

We discuss the connections between Brownian ratchets (BR) and stochastic resonance (SR). We consider a periodic potential energy landscape with no left-right symmetry that is driven by an external force which can be derived from a potential that is periodic both in time and space. We show that this...

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Autor principal: Fendrik, A.J
Otros Autores: Romanelli, Lilia Mabel, Perazzo, Roberto Pedro José
Formato: Capítulo de libro
Lenguaje:Inglés
Publicado: 2006
Acceso en línea:Registro en Scopus
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100 1 |a Fendrik, A.J. 
245 1 0 |a Stochastic resonance and Brownian ratchets 
260 |c 2006 
270 1 0 |m Romanelli, L.; Instituto de Ciencias, Universidad de General Sarmiento, J.M.Gutierrez 1150, 1613 Los Polvorines, Buenos Aires, Argentina; email: lili@ungs.edu.ar 
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504 |a Anonymous referee, private communication 
506 |2 openaire  |e Política editorial 
520 3 |a We discuss the connections between Brownian ratchets (BR) and stochastic resonance (SR). We consider a periodic potential energy landscape with no left-right symmetry that is driven by an external force which can be derived from a potential that is periodic both in time and space. We show that this system presents two thermal enhancements within two different windows of the temperature. One is associated with a "coherent diffusion" by which particles jump back and forth between the minima of the periodic potential in synchrony with the external driving. The other is instead associated with a "coherent directional transport" by which particles hop synchronically from one minimum of the ratchet to the next. We calculate the current and the diffusion coefficients and show how transport undergoes a resonant enhancement. While the former is always present, the second only appears when left-right symmetry is broken. © 2005 Elsevier B.V. All rights reserved.  |l eng 
536 |a Detalles de la financiación: Secretaría de Ciencia y Técnica, Universidad de Buenos Aires, X281 
536 |a Detalles de la financiación: Consejo Nacional de Investigaciones Científicas y Técnicas, PIP 02490 
536 |a Detalles de la financiación: Two of the authors (AF and LR) wishes to acknowledge CONICET (PIP 02490) and UBACYT (X281) for financial assistance. RP wishes to acknowledge CNIO (Madrid, Spain) and IMAG (Grenoble, France) for warm hospitality. 
593 |a Departamento de Física J.J.Giambiagi, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, 1428 Buenos Aires, Argentina 
593 |a Instituto de Ciencias, Universidad de General Sarmiento, J.M.Gutierrez 1150, 1613 Los Polvorines, Buenos Aires, Argentina 
593 |a Departamento de Investigación y Desarrollo, Instituto Tecnológico de Buenos Aires, Avda. Madero 399, 1106 Buenos Aires, Argentina 
690 1 0 |a BROWNIAN MOTORS 
690 1 0 |a COHERENT TRANSPORT 
690 1 0 |a DIFFUSION 
690 1 0 |a THERMAL ENHANCEMENT 
690 1 0 |a TRANSPORT PHENOMENA 
690 1 0 |a DIFFUSION 
690 1 0 |a POTENTIAL ENERGY 
690 1 0 |a RESONANCE 
690 1 0 |a TRANSPORT PROPERTIES 
690 1 0 |a BROWNIAN MOTORS 
690 1 0 |a COHERENT TRANSPORT 
690 1 0 |a THERMAL ENHANCEMENT 
690 1 0 |a STATISTICAL MECHANICS 
700 1 |a Romanelli, Lilia Mabel 
700 1 |a Perazzo, Roberto Pedro José 
773 0 |d 2006  |g v. 359  |h pp. 75-84  |k n. 1-4  |p Phys A Stat Mech Appl  |x 03784371  |w (AR-BaUEN)CENRE-280  |t Physica A: Statistical Mechanics and its Applications 
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856 4 0 |u https://doi.org/10.1016/j.physa.2005.04.035  |y DOI 
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