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Entropons as collective excitations in active solids.
- Source :
-
Journal of Chemical Physics . 7/28/2023, Vol. 159 Issue 4, p1-14. 14p. - Publication Year :
- 2023
-
Abstract
- The vibrational dynamics of solids is described by phonons constituting basic collective excitations in equilibrium crystals. Here, we consider a non-equilibrium active solid, formed by self-propelled particles, which bring the system into a non-equilibrium steady-state. We identify novel vibrational collective excitations of non-equilibrium (active) origin, which coexist with phonons and dominate over them when the system is far from equilibrium. These vibrational excitations are interpreted in the framework of non-equilibrium physics, in particular, stochastic thermodynamics. We call them "entropons" because they are the modes of spectral entropy production (at a given frequency and wave vector). The existence of entropons could be verified in future experiments on dense self-propelled colloidal Janus particles and granular active matter, as well as in living systems, such as dense cell monolayers. [ABSTRACT FROM AUTHOR]
- Subjects :
- *JANUS particles
*SOLIDS
*THERMODYNAMICS
*PHONONS
*EQUILIBRIUM
*SPIN excitations
Subjects
Details
- Language :
- English
- ISSN :
- 00219606
- Volume :
- 159
- Issue :
- 4
- Database :
- Academic Search Index
- Journal :
- Journal of Chemical Physics
- Publication Type :
- Academic Journal
- Accession number :
- 169709101
- Full Text :
- https://doi.org/10.1063/5.0156312