Fluctuation-Induced Interaction between Randomly Charged Dielectrics

Details Fluctuation-Induced Interaction between Randomly Charged Dielectrics Fluctuation-Induced Interaction between Randomly Charged Dielectrics

2009-08-10

arxiv.org/abs/0908.1337v2

Phys. Rev. Lett. 104, 060601 (2010)

Physics

Condensed Matter

Other Condensed Matter

4 pages, 2 figures

Scientific paper

Monopolar charge disorder effects are studied in the context of fluctuation-induced interactions between neutral dielectric slabs. It is shown that quenched bulk charge disorder gives rise to an additive contribution to the net interaction force which decays as the inverse distance between the slabs and may thus completely mask the standard Casimir--van der Waals force at large separations. By contrast, annealed (bulk or surface) charge disorder leads to a net interaction force whose large-distance behavior coincides with the universal Casimir force between perfect conductors, which scales as inverse cubic distance, and the dielectric properties enter only in subleading corrections.

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