Z H Liu and S A Fulling 2006 New J. Phys. 8 234 doi:10.1088/1367-2630/8/10/234
Casimir energy with a Robin boundary: the multiple-reflection cylinder-kernel expansion
Focus on Casimir ForcesZ H Liu1 and S A Fulling2,3
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We compute the vacuum energy of a massless scalar field obeying a Robin boundary condition ((∂/∂ x)
= β ) on one plate and the Dirichlet boundary condition ( = 0) on a parallel plate. The Casimir energy density for general dimension is obtained as a function of a (the plate separation) and β by studying the cylinder kernel (alias an exponential ultraviolet cutoff); we construct an infinite-series solution as a sum over classical paths and observe that the method of construction has broader applications. The total Casimir energy is finite after subtraction of divergences associated with the individual plates, which do not affect the force between the plates. The series for the total energy is an alternative to the integral formula of Romeo and Saharian, with which it agrees numerically.
- PACS
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02.30.Mv Approximations and expansions
02.60.Lj Ordinary and partial differential equations; boundary value problems
- Subjects
- Dates
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Issue 10 (October 2006)
Received 1 May 2006
Published 20 October 2006
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Casimir energy with a Robin boundary: the multiple-reflection cylinder-kernel expansion
Z H Liu and S A Fulling 2006 New J. Phys. 8 234
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Density response to central electron heating: theoretical investigations and experimental observations in ASDEX Upgrade
C. Angioni et al 2004 Nucl. Fusion 44 827
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