Transient Casimir Forces

from Quenches in Thermal and Active Matter

Summary

I.      Casimir Forces:         

Long-range correlations lead to long-range fluctuation-induced forces.

II.   Transient FIF:                   

Agitating a conserved density leads to transient long-ranged forces.

III.   Simulations

  Changes in the mean density cause transient forces:             

  FIF component (for interacting particles) at long times:       

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