论文标题
非平衡相分离系统中的界面粗糙
Interface roughening in nonequilibrium phase-separated systems
论文作者
论文摘要
由于毛细管波，相分离系统的界面及时粗糙。由于散装中的通量，它们的动力学在真实空间中是非本地的，并且没有由Edwards-Wilkinson或Kardar-Parisi-Zhang（KPZ）方程来描述，也不是其保守的对应物。我们表明，在没有详细平衡的情况下，相位分离的界面由我们称为| q | kpz的新通用类描述。我们通过单环重新归化组计算关联的关键指数，并通过数值集成| q | kpz方程来证实结果。从最小的活动相分离的场理论中得出有效的界面动力学，我们最终认为| q | kpz通用类别通常描述了活动系统中的液体蒸气接口。
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.
