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

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Abstract

We briefly comment on a paper by Rubano and Scudellaro [Gen. Rel. Grav. 34 (2002) 307, 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-Ia supernovae with good accuracy.

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REFERENCES

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Authors and Affiliations

  1. Departamento de Fisica, Universidad Central de Las Villas, Santa Clara, CP: 54830, Villa Clara, Cuba

    Rolando Cardenas, Tame Gonzalez, Osmel Martin, Israel Quiros & Diosdado Villegas

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  1. Rolando Cardenas
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  2. Tame Gonzalez
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  3. Osmel Martin
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  4. Israel Quiros
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  5. Diosdado Villegas
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Cardenas, R., Gonzalez, T., Martin, O. et al. Comments on the Paper astro-ph/0103335 by C. Rubano and P. Scudellaro. General Relativity and Gravitation 34, 1877–1885 (2002). https://doi.org/10.1023/A:1020720209269

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  • DOI: https://doi.org/10.1023/A:1020720209269

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