Interface roughening in nonequilibrium phase-separated systems
| Autor: | Besse, Marc, Fausti, Giordano, Cates, Michael E., Delamotte, Bertrand, Nardini, Cesare |
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| Rok vydání: | 2022 |
| Předmět: | |
| Zdroj: | Physical Review Letters, 130, 187102, 2023 |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1103/PhysRevLett.130.187102 |
| Popis: | Interfaces of phase-separated systems roughen in time due to capillary waves. Because of fluxes in the bulk, their dynamics is nonlocal in real space and is not described by the Edwards-Wilkinson or Kardar-Parisi-Zhang (KPZ) equations, nor their conserved counterparts. We show that in the absence of detailed balance, the phase-separated interface is described by a new universality class that we term |q|KPZ. We compute the associated critical exponents via one-loop renormalization group, and corroborate the results by numerical integration of the |q|KPZ equation. Deriving the effective interface dynamics from a minimal field theory of active phase separation, we finally argue that the |q|KPZ universality class generically describes liquid-vapor interfaces in active systems. Comment: 6 pages, 3 figures, 1 supplemental |
| Databáze: | arXiv |
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