International Journal of Theoretical Physics

, Volume 36, Issue 5, pp 1249–1252 | Cite as

Geodesics for photons, particles, and tachyons in a cosmological model

  • Marcelo S. Berman


We find geodesics in a flat universe obeying a perfect gas law for the equation of state, by means of a constant deceleration model. Inflationary and power-law cases are considered.


Cosmological Model Berman Deceleration Parameter Null Geodesic Flat Universe 
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Copyright information

© Plenum Publishing Corporation 1997

Authors and Affiliations

  • Marcelo S. Berman
    • 1
    • 2
  1. 1.Group of Cosmology and Gravitation, Division of AstrophysicsINPE (National Institute of Space Research)São José dos CamposBrazil
  2. 2.Dept. of PhysicsInstituto Tecnológico de Aeronautica (ITA)São José Dos CamposBrazil

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