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Paper   IPM / Physic / 8038
School of Physics
  Title:   Casimir Stress for Cylindrical Shell in de Sitter Space
  Author(s):  M.R. Setare
  Status:   Published
  Journal: Gen. Relat. Gravit.
  Vol.:  36
  Year:  2004
  Pages:   1965-1975
  Supported by:  IPM
The Casimir stress on a cylindrical shell in the de Sitter background for a massless scalar field satisfying Dirichlet boundary conditions on the cylinder is calculated. The metric is written in conformally flat form to make maximal use of the Minkowski space calculations. In the framework of a toy model, we have considered the quantum vacuum effect in the evolution of a domain wall between a cylindrical or in fact circle region around the z axis in which vacuum is Lambda(in) and the remaining part of space where vacuum is Lambda(out).

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