Article ; Online: Entropy production and collective excitations of crystals out of equilibrium: The concept of entropons.
2023 Volume 108, Issue 4-1, Page(s) 44603
Abstract: We study the collective vibrational excitations of crystals under out-of-equilibrium steady conditions that give rise to entropy production. Their excitation spectrum comprises equilibriumlike phonons of thermal origin and additional collective ... ...
Abstract | We study the collective vibrational excitations of crystals under out-of-equilibrium steady conditions that give rise to entropy production. Their excitation spectrum comprises equilibriumlike phonons of thermal origin and additional collective excitations called entropons because each of them represents a mode of spectral entropy production. Entropons coexist with phonons and dominate them when the system is far from equilibrium while they are negligible in near-equilibrium regimes. The concept of entropons has been recently introduced and verified in a special case of crystals formed by self-propelled particles. Here we show that entropons exist in a broader class of active crystals that are intrinsically out of equilibrium and characterized by the lack of detailed balance. After a general derivation, several explicit examples are discussed, including crystals consisting of particles with alignment interactions and frictional contact forces. |
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Language | English |
Publishing date | 2023-11-17 |
Publishing country | United States |
Document type | Journal Article |
ZDB-ID | 2844562-4 |
ISSN | 2470-0053 ; 2470-0045 |
ISSN (online) | 2470-0053 |
ISSN | 2470-0045 |
DOI | 10.1103/PhysRevE.108.044603 |
Database | MEDical Literature Analysis and Retrieval System OnLINE |
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