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Paper   IPM / Physic / 6935
School of Physics
  Title:   Some Exact Geometries for Asymptotically de Sitter Spacetime
  Author(s):  N. Riazi
  Status:   Published
  Journal: Astrophysics and Space Science
  No.:  2
  Vol.:  283
  Year:  2003
  Pages:   235-244
  Supported by:  IPM
Spherical, time-dependent geometrical structures in an inflationary RW background are derived from the Einstein equations, using a constraint on the energy-momentum tensor which is an extension of the one expected for inflation. The possibility of dynamical wormholes and other spherical structures are explored in the framework of the solutions.

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