Comments on the paper astro-ph/0103335 by C Rubano and P Scudellaro

Details Comments on the paper astro-ph/0103335 by C Rubano and P Scudellaro Comments on the paper astro-ph/0103335 by C Rubano and P Scudellaro

2001-12-13

arxiv.org/abs/astro-ph/0112316v2

Gen.Rel.Grav. 34 (2002) 1877-1885

Astronomy and Astrophysics

Astrophysics

9 pages, Revtex, discussion on Type-1a supernovae added, 5 figures added

Scientific paper

We briefly comment on a paper by Rubano and Scudellaro [astro-ph/0103335] where they found general exact solutions for two classes of exponential potentials in a scalar field model for quintessence. In that paper the authors were led to some interesting conclusions after a proper choice of the integration constants. By using dimensionless variables we show that the integration constants can be found explicitly without additional assumptions. In consequence we revise some results and conclusions in that paper. We also reproduce observations for Type-1a supernovae with good accuracy.

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