Article
Mesoscopic theory of critical fluctuations in isolated granular gases
Author/s | Domínguez Álvarez, Álvaro
García de Soria Lucena, María Isabel Maynar Blanco, Pablo Brey Abalo, José Javier |
Department | Universidad de Sevilla. Departamento de Física Atómica, Molecular y Nuclear |
Publication Date | 2006-05-12 |
Deposit Date | 2017-07-18 |
Published in |
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Abstract | Fluctuating hydrodynamics is used to describe the total energy fluctuations of a freely evolving gas of inelastic hard spheres near the threshold of the clustering instability. They are shown to be governed only by vorticity ... Fluctuating hydrodynamics is used to describe the total energy fluctuations of a freely evolving gas of inelastic hard spheres near the threshold of the clustering instability. They are shown to be governed only by vorticity fluctuations that also lead to a renormalization of the average total energy. The theory predicts a power-law divergent behavior of the scaled second moment of the fluctuations, and a scaling property of their probability distribution, both in agreement with simulations results. A more quantitative comparison between theory and simulation for the critical amplitudes and the form of the scaling function is also carried out. |
Funding agencies | Ministerio de Educación y Ciencia (MEC). España |
Citation | Domínguez Álvarez, Á., García de Soria Lucena, M.I., Maynar Blanco, P. y Brey Abalo, J.J. (2006). Mesoscopic theory of critical fluctuations in isolated granular gases. Physical Review Letters, 96 (15), 158002-1-158002-4. |
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