Relativistic Cosmology with Zero Deceleration Parameter

Details Relativistic Cosmology with Zero Deceleration Parameter Relativistic Cosmology with Zero Deceleration Parameter

Oct 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997ap%26ss.253..285m&link_type=abstract

Astrophysics and Space Science, Volume 253, Issue 2, pp.285-289

Astronomy and Astrophysics

Astrophysics

Scientific paper

The possibility that the deceleration parameter q might be a null constant is discussed; such possibilitiy is interesting because solves the horizon problem and the flatness problem with no need of inflation. A simple way to get q = const = 0 is explored: the way assumes Einstein's field equations without cosmological term and introduces a massless scalar field V with negative energy density. Both in the early and in the present universe one finds the Whitrow-Randall relation Gut2 = const 1 G gravitational coupling, u mass-energy density, t cosmic time). The interaction between the V-field and the ordinary matter is briefly discussed; as possible consequence of this interaction the true value of the Hubble parameter might be one half the observed value.

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