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Worldline Approach To The Casimir Effect

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arxiv hep-th/0311168 v1 pith:KN7ZNSVZ submitted 2003-11-19 hep-th

Worldline Approach To The Casimir Effect

classification hep-th
keywords fieldmethodapproachcasimirconfigurationcurvatureeffectsforce
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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We present a new method to compute quantum energies in presence of a background field. The method is based on the string-inspired worldline approach to quantum field theory and its numerical realization with Monte-Carlo techniques. Our procedure is applied to the study of the Casimir force between rigid bodies induced by a fluctuating real scalar field. We test our method with the classic parallel-plate configuration and study curvature effects quantitatively for the sphere-plate configuration. The numerical estimates are compared with the ``proximity force approximation''. Sizable curvature effects are found for a distance-to-curvature-radius ratio of a/R>0.02.

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