Artículo
Dynamics of annihilation. II. Fluctuations of global quantities
Autor/es | Maynar Blanco, Pablo
García de Soria Lucena, María Isabel Schehr, Grégory Barrat, Alain Trizac, Emmanuel |
Departamento | Universidad de Sevilla. Departamento de Física Atómica, Molecular y Nuclear |
Fecha de publicación | 2008 |
Fecha de depósito | 2020-05-19 |
Publicado en |
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Resumen | We develop a theory for fluctuations and correlations in a gas evolving under ballistic annihilation dynamics.
Starting from the hierarchy of equations governing the evolution of microscopic densities in phase space, ... We develop a theory for fluctuations and correlations in a gas evolving under ballistic annihilation dynamics. Starting from the hierarchy of equations governing the evolution of microscopic densities in phase space, we subsequently restrict our attention to a regime of spatial homogeneity, and obtain explicit predictions for the fluctuations and time correlation of the total number of particles, total linear momentum, and total kinetic energy. Cross correlations between these quantities are worked out as well. These predictions are successfully tested against molecular dynamics and Monte Carlo simulations. This provides strong support for the theoretical approach developed, including the hydrodynamic treatment of the spectrum of the linearized Boltzmann operator. This paper makes use of the spectral analysis reported in the preceding paper |
Cita | Maynar Blanco, P., García de Soria Lucena, M.I., Schehr, G., Barrat, A. y Trizac, E. (2008). Dynamics of annihilation. II. Fluctuations of global quantities. Physical Review E, 77 (5), 051128-1-051128-14. |
Ficheros | Tamaño | Formato | Ver | Descripción |
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pubPhysRevE.77.051128.pdf | 929.6Kb | [PDF] | Ver/ | |