M.Sc Student | Rabaglia Roy |
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Subject | Fluctuation Induced Forces from Non-Equilibrium Conservative Anisotropic Diffusive Dynamics |

Department | Department of Physics |

Supervisor | Professor Yariv Kafri |

Full Thesis text |

Placing objects
which confine the fluctuations within a fluctuating system with long range
correlations leads to long ranged, Casimir like, fluctuation induced forces
acting on the objects.

In addition, it is well known that the absence of fluctuation-dissipation in
conservative, anisotropic, interacting diffusive systems leads to the
development of long-range correlations of the fluctuations in such systems.

In this thesis work we investigate the long ranged fluctuation induced forces
arising from the confinement of the correlated fluctuations in the out of
equilibrium conservative diffusive systems, stating from a phenomenological
approach. We evaluate the pressure extracted by the confinement of the
fluctuations using pressure functional expansion.

We predict that in the case of two parallel confining plates placed within a d
dimensional system in distance L from each other, these forces scales like *L ^{-d}*
for

We propose microscopic models which fulfill the requirements in order to exhibit the fluctuation induced forces discussed. In particular, we investigate an anisotropic active run-and-tumble microscopic dynamics model using Biroli Lefevre field-theory approach, and propose it as a good candidate for further experimental research.