Dynamical large deviations for long-range interacting inhomogeneous systems without collective effects

Autor:	Feliachi, Ouassim, Fouvry, Jean-Baptiste
Rok vydání:	2023
Předmět:	Condensed Matter - Statistical Mechanics Astrophysics - Astrophysics of Galaxies
Druh dokumentu:	Working Paper
Popis:	We consider the long-term evolution of an inhomogeneous long-range interacting $N$-body system. Placing ourselves in the dynamically hot limit, i.e. neglecting collective effects, we derive a large deviation principle for the system's empirical angle-averaged distribution function. This result extends the classical ensemble-averaged kinetic theory given by the so-called inhomogeneous Landau equation, as it specifies the probability of typical and large dynamical fluctuations. We detail the main properties of the associated large deviation Hamiltonian, in particular how it complies with the system's conservation laws and possesses a gradient structure. Comment: 13 pages, 0 figures, submitted to APS
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/2308.08308 Zobrazit plný text záznamu View this record from Arxiv