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Paper   IPM / Physic / 14416
School of Physics
  Title:   Induced rotation from de Sitter-Godel-de Sitter phase transition
1.  Sh. Khodabakhshi
2.  A. Shojai
  Status:   Published
  Journal: Phys. Rev. D
  No.:  12
  Vol.:  92
  Year:  2015
  Pages:   123541
  Supported by:  IPM
The rotation of the cosmic objects is a universal phenomenon and its origin is still an open question. Here a model for the origin of rotation is presented. After an investigation of the phase transition of a scalar field in de Sitter and Gödel backgrounds, the motion of a test particle during the phase transitions is studied. Then using computer simulation for a congruence of particles, we show that although the local induced rotation is nonzero, the global rotation is below the observational limit.

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