2015/05/19 by Lee-Peng Teo, L. P. Teo, Teo, L. P.
Mathematics · Physics and Astronomy · #Boundary value problem #Casimir effect #Casimir pressure #Classical mechanics #Cylinder #Dirichlet boundary condition #Geometry #Mathematical analysis #Mathematical physics #Mathematics #Mechanical and Optical Resonators #Minkowski space #Neumann boundary condition #Noncommutative and Quantum Gravity Theories #Physics #Quantum Electrodynamics and Casimir Effect #Quantum mechanics #Scalar (mathematics) #Spacetime #hep-th #math-ph #math.MP
paper · pdf · doi:10.48550/arxiv.1505.04860
24 pages, 3 figures
arxiv created 2015/05/19 · openalex publication_date 2015/05/19 · arxiv updated 2015/05/20 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We study the cylinder-plate and the cylinder-cylinder Casimir interaction in the (D+1)-dimensional Minkowski spacetime due to the vacuum fluctuations of massless scalar fields. Different combinations of Dirichlet (D) and Neumann (N) boundary conditions are imposed on the two interacting objects. For the cylinder-cylinder interaction, we consider the case where one cylinder is inside the other, and the case where the two cylinders are outside each other. By computing the transition matrices of the objects and the translation matrices that relate different coordinate systems, the explicit formulas for the Casimir interaction energies are derived. Using perturbation technique, we compute the small separation asymptotic expansions of the Casimir interaction energies up to the next-to-leading order terms. The leading terms coincide with the respective results obtained using proximity force approximation, which is of order d-D+1/2, where d is the distance between the two objects. The results on the next-to-leading order terms are more interesting and important. We find some universal behaviors. It is also noticed that for the case of Dirichlet-Dirichlet cylinder-plate interaction, the next-to-leading order term agrees with that obtained using derivative expansion. Hence, based on our results on other boundary conditions and on the cylinder-cylinder interaction, we postulate a formula for the derivative expansion to expand the Casimir interaction energy up to the next-to-leading order terms for DD, DN, ND and NN boundary conditions, for the interaction between two curved surfaces in (D+1)-dimensional Minkowski spacetime. It is found that the postulate agrees with our previous results on the sphere-sphere interactions except when D=4.