Chaos and relaxation to equilibrium in systems with long-range interactions
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2015Tipo
Abstract
In the thermodynamic limit, systems with long-range interactions do not relax to equilibrium, but become trapped in nonequilibrium stationary states. For a finite number of particles a nonequilibrium state has a finite lifetime, so that eventually a system will relax to thermodynamic equilibrium. The time that a system remains trapped in a quasistationary state (QSS) scales with the number of particles as Nδ, with δ > 0, and diverges in the thermodynamic limit. In this paper we will explore the ...
In the thermodynamic limit, systems with long-range interactions do not relax to equilibrium, but become trapped in nonequilibrium stationary states. For a finite number of particles a nonequilibrium state has a finite lifetime, so that eventually a system will relax to thermodynamic equilibrium. The time that a system remains trapped in a quasistationary state (QSS) scales with the number of particles as Nδ, with δ > 0, and diverges in the thermodynamic limit. In this paper we will explore the role of chaotic dynamics on the time that a system remains trapped in a QSS.We discover that chaos, measured by the Lyapunov exponents, favors faster relaxation to equilibrium. Surprisingly, weak chaos favors faster relaxation than strong chaos. ...
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Physical review. E, Statistical, nonlinear, and soft matter physics. Vol. 92, no. 5 (Nov. 2015), 052123, 7 p.
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Artigos de Periódicos (39541)Ciências Exatas e da Terra (6036)
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