Environmental stability of quantum chaotic ratchets
Entidad
UAM. Departamento de QuímicaFecha de edición
2011-01-05Cita
10.1103/PhysRevE.83.011103
Physical Review E 83.1 (2011): 011103
ISSN
1539-3755 (print); 1550-2376 (online)DOI
10.1103/PhysRevE.83.011103Financiado por
Partial support by ANPCyT and CONICET (Argentina), and MICINN-Spain, under Contracts No. MTM2009- 14621 and No. iMath-CONSOLIDER 2006-32, is gratefully acknowledgedVersión del editor
http://dx.doi.org/10.1103/PhysRevE.83.011103Materias
QuímicaDerechos
© 2011 American Physical SocietyResumen
The transitory and stationary behavior of a quantum chaotic ratchet consisting of a biharmonic potential under the effect of different drivings in contact with a thermal environment is studied. For weak forcing and finite h¯, we identify a strong dependence of the current on the structure of the chaotic region. Moreover, we have determined the robustness of the current against thermal fluctuations in the very weak coupling regime. In the case of strong forcing, the current is determined by the shape of a chaotic attractor. In both cases the temperature quickly stabilizes the ratchet, but in the latter it also destroys the asymmetry responsible for the current generation. Finally, applications to isomerization reactions are discussed
Lista de ficheros
Google Scholar:Carlo, Gabriel G.
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Ermann, Leonardo
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Borondo, Florentino
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Benito, R. M.
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