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CURVATURE QUINTESSENCE MATCHED WITH OBSERVATIONAL DATA

Dipartimento di Fisica "E. R. Caianiello", Università di Salerno, I-84081 Baronissi, Salerno, Italy

Istituto Nazionale di Fisica Nucleare, sez. di Napoli, Gruppo Collegato di Salerno, Via S. Allende-84081 Baronissi (SA), Italy

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V. F. CARDONE

Dipartimento di Fisica "E. R. Caianiello", Università di Salerno, I-84081 Baronissi, Salerno, Italy

Istituto Nazionale di Fisica Nucleare, sez. di Napoli, Gruppo Collegato di Salerno, Via S. Allende-84081 Baronissi (SA), Italy

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S. CARLONI

Dipartimento di Fisica "E. R. Caianiello", Università di Salerno, I-84081 Baronissi, Salerno, Italy

Istituto Nazionale di Fisica Nucleare, sez. di Napoli, Gruppo Collegato di Salerno, Via S. Allende-84081 Baronissi (SA), Italy

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, and

A. TROISI

Dipartimento di Fisica "E. R. Caianiello", Università di Salerno, I-84081 Baronissi, Salerno, Italy

Istituto Nazionale di Fisica Nucleare, sez. di Napoli, Gruppo Collegato di Salerno, Via S. Allende-84081 Baronissi (SA), Italy

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https://doi.org/10.1142/S0218271803004407Cited by:486 (Source: Crossref)

Abstract

Quintessence issues can be achieved by taking into account higher order curvature invariants into the effective action of gravitational field. Such an approach is naturally related to fundamental theories of quantum gravity which predict higher order terms in loop expansion of quantum fields in curved space-times. In this framework, we obtain a class of cosmological solutions which are fitted against cosmological data. We reproduce encouraging results able to fit high redshift supernovae and WMAP observations. The age of the universe and other cosmological parameters are discussed in this context.

Keywords:

PACS: 98.80.Cq, 98.80. Hw, 04.20.Jb, 04.50

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