Department of Physics and Astronomy, University of Sheffield, Sheffield S3 7RH, United Kingdom.
Phys Rev Lett. 2010 Feb 12;104(6):060601. doi: 10.1103/PhysRevLett.104.060601. Epub 2010 Feb 10.
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 agrees with the universal Casimir force between ideal conductors, which scales as the inverse cubic distance, and the dielectric properties enter only in the subleading corrections.
研究了中性介电体平板间的涨落诱导相互作用背景下的单极电荷无序效应。结果表明，猝灭的体电荷无序会导致净相互作用力的附加贡献，该贡献随平板间距离的倒数而衰减，因此在大间距处可能完全掩盖标准的 Casimir-van der Waals 力。相比之下，退火（体或表面）电荷无序会导致净相互作用力，其大距离行为与理想导体之间的通用 Casimir 力一致，其比例为逆立方距离，介电性质仅在次要修正中起作用。
