Title: Transient Casimir Forces from Quenches in Thermal and Active Matter

Author (Talk): Alex Solon, MIT, Physics Department

Abstract:

Non-equilibrium systems are known to exhibit long-ranged correlations in the presence of dynamical conservation laws leading to fluctuation-induced (Casimir) forces between embedded objects. We will describe here two effects leading to a force between plates or inclusions immersed in a fluid of passive or active particles after a quench in temperature. At short times, the change in boundary layer dominates the interaction between two objects while at late time the long-ranged Casimir forces become important.