期刊
EPL
卷 97, 期 5, 页码 -出版社
EPL ASSOCIATION, EUROPEAN PHYSICAL SOCIETY
DOI: 10.1209/0295-5075/97/50001
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资金
- ESF Research Network CASIMIR
- DARPA [S-000354]
- NSF [DMR-08-03315]
- U. S. Department of Energy (DOE) [DF-FC02-94ER40818]
- Division Of Materials Research
- Direct For Mathematical & Physical Scien [1206323] Funding Source: National Science Foundation
The proximity force approximation (PFA) relates the interaction between closely spaced, smoothly curved objects to the force between parallel plates. Precision experiments on Casimir forces necessitate, and spur research on, corrections to the PFA. We use a derivative expansion for gently curved surfaces to derive the leading curvature modifications to the PFA. Our methods apply to any homogeneous and isotropic materials; here we present results for Dirichlet and Neumann boundary conditions and for perfect conductors. A Pade extrapolation constrained by a multipole expansion at large distance and our improved expansion at short distances, provides an accurate expression for the sphere/plate Casimir force at all separations. Copyright (C) c EPLA, 2012
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