Bianchi Type-II inflationary models with constant deceleration parameter in general relativity

Details Bianchi Type-II inflationary models with constant deceleration parameter in general relativity Bianchi Type-II inflationary models with constant deceleration parameter in general relativity

May 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007prama..68..707s&link_type=abstract

Pramana, vol. 68, Issue 5, p.707

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25

Cosmology, Bianchi Space--Time, Deceleration Parameter

Scientific paper

Einstein's field equations are considered for a locally rotationally symmetric Bianchi Type-II space--time in the presence of a massless scalar field with a scalar potential. Exact solutions of scale factors and other physical parameters are obtained by using a special law of variation for Hubble's parameter that yields a constant value of deceleration parameter. To get inflationary solutions, a flat region is considered in which the scalar potential is constant. Power-law and exponential cases are studied and in both solutions there is an anisotropic expansion of the cosmic fluid, but the fluid has vanishing vorticity. A detailed study of geometrical and kinematical properties of solutions has been carried out.

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