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Paper   IPM / Physic / 7236
School of Physics
  Title:   Casimir Forces for Robin Scalar Field on Cylindrical Shell in de Sitter Space
  Author(s):  M.R. Setare
  Status:   Preprint
  No.:  0
  Year:  2003
  Supported by:  IPM
The Casimir stress on a cylinderical shell in background of conformally flat space-time for massless scalar field is investigated. In the general case of Robin (mixed) boundary condition formulae are derived for the vacuum expectation values of the energy-momentum tensor and vacuum forces acting on boundaries. The special case of the dS bulk is considered then different cosmological constants are assumed for the space inside and outside of the shell to have general results applicable to the case of cylindrical domain wall formations in the early universe.

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