Artículo
Stationarity, ergodicity, and entropy in relativistic systems
Autor/es | Cubero Gómez, David
Dunkel, Jörn |
Departamento | Universidad de Sevilla. Departamento de Física Aplicada I |
Fecha de publicación | 2009 |
Fecha de depósito | 2015-06-11 |
Publicado en |
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Resumen | Recent molecular-dynamics simulations show that a dilute relativistic gas equilibrates to a Jüttner velocity distribution if ensemble velocities are measured simultaneously in the observer frame. The analysis of relativistic ... Recent molecular-dynamics simulations show that a dilute relativistic gas equilibrates to a Jüttner velocity distribution if ensemble velocities are measured simultaneously in the observer frame. The analysis of relativistic Brownian motion processes, on the other hand, implies that stationary one-particle distributions can differ depending on the underlying time parameterizations. Using molecular-dynamics simulations, we demonstrate how this relativistic phenomenon can be understood within a deterministic model system. We show that, depending on the time parameterization, one can distinguish different types of “soft” ergodicity on the level of the one-particle distributions. Our analysis further reveals a close connection between time parameters and entropy in special relativity. A combination of different time parameterizations can potentially be useful in simulations that combine molecular-dynamics algorithms with randomized particle creation, annihilation, or decay processes. |
Agencias financiadoras | Ministerio de Ciencia e Innovación (MICIN). España |
Cita | Cubero Gómez, D. y Dunkel, J. (2009). Stationarity, ergodicity, and entropy in relativistic systems. Europhysics letters, 87 (3), 30005-1-6. |
Ficheros | Tamaño | Formato | Ver | Descripción |
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EPL_Cubero_2009_stationary.pdf | 236.2Kb | [PDF] | Ver/ | |