Effects of chaotic dynamics on quantum friction
| Autor: | Alejandro M. F. Rivas, Gabriel G. Carlo, Leonardo Ermann |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Ciencias Físicas
Parameter space Otras Ciencias Físicas Planck constant 01 natural sciences 010305 fluids & plasmas purl.org/becyt/ford/1 [https] Momentum symbols.namesake QUANTUM CHAOS 0103 physical sciences 010306 general physics Quantum Computer Science::Distributed Parallel and Cluster Computing Physics Astrophysics::Instrumentation and Methods for Astrophysics TRANSPORT PHENOMENA purl.org/becyt/ford/1.3 [https] Dissipation Coupling (probability) Quantum chaos Classical mechanics QUANTUM OPEN SYSTEMS CHAOS Dissipative system symbols CIENCIAS NATURALES Y EXACTAS |
| Zdroj: | CONICET Digital (CONICET) Consejo Nacional de Investigaciones Científicas y Técnicas instacron:CONICET |
| ISSN: | 2470-0053 2470-0045 |
| DOI: | 10.1103/physreve.99.042214 |
| Popis: | By means of studying the evolution equation for the Wigner distributions of quantum dissipative systems we derive the quantum corrections to the classical Liouville dynamics, taking into account the standard quantum friction model. The resulting evolution turns out to be the classical one plus fluctuations that depend not only on the ¯h size but also on the momentum and the dissipation parameter (i.e., the coupling with the environment). On the other hand, we extend our studies of a paradigmatic system based on the kicked rotator, and we confirm that by adding fluctuations only depending on the size of the Planck constant we essentially recover the quantum behavior. This is systematically measured in the parameter space with the overlaps and differences in the dispersion of the marginal distributions corresponding to the Wigner functions. Taking into account these results and analyzing the Wigner evolution equation we conjecture that the chaotic nature of our system is responsible for the independence on the momentum, while the dependence on the dissipation is provided implicitly by the dynamics. Fil: Carlo, Gabriel Gustavo. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Comisión Nacional de Energía Atómica; Argentina Fil: Ermann, Leonardo. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Comisión Nacional de Energía Atómica; Argentina Fil: Rivas, Alejandro Mariano Fidel. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Comisión Nacional de Energía Atómica; Argentina |
| Databáze: | OpenAIRE |
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