Worldline Approach To The Casimir Effect

Details Worldline Approach To The Casimir Effect Worldline Approach To The Casimir Effect

2003-11-19

arxiv.org/abs/hep-th/0311168v1

Physics

High Energy Physics

High Energy Physics - Theory

9 pages, 5 figures, Talk given at 6th Workshop on Quantum Field Theory under the Influence of External Conditions (QFEXT03), N

Scientific paper

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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