Transient Fluctuation-Induced Force
Are there long-ranged fluctuation-induced forces in active matter?
"Fluctuation-Induced Casimir Forces in Granular Fluids,"
C. Cattuto, R. Brito, U.M.B. Marconi, F. Nori, and R. Soto, Phys. Rev. Lett. 96, 178001 (2006)
"Nonadditivity of Fluctuation-Induced Forces in Fluidized Granular Media,"
M.R. Shaebani1, J. Sarabadani, and D.E. Wolf, Phys. Rev. Lett. 108, 198001 (2012)
"Casimir effect in actice mtter systems,"
D. Ray, C. Reichhardt, and C.J. Olson Reichhardt, Phys. Rev. E 90, 013019 (2014)
The annswer is negative: no long-ranged correlations and no long-ranged interactions.
Agitating active matter from rest:
C.M. Rohwer, M. Kardar and Matthias Krüger, Phys. Rev. Lett. 188, 015702 (2017)
Self-propelled colloidal particles Shaken GrainsFluctuations of the conserved density field satisfy (model B):
"Out of equilibrium behavior of Casimir-type fluctuation-induced forces for free classical fields,"
D. Dean and A. Gopinathan, Phys. Rev. E 81, 041126 (2010)
Transient fluctuation-induced force between plates:
Transient fluctuation-induced force between two inclusions:
Conserved density leads to transient long-ranged force. (How "universal" is this result?)