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APS » Journals » Phys. Rev. D » Volume 68 » Issue 12
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Phys. Rev. D 68, 123501 (2003) [5 pages]

Oscillating dark energy: A possible solution to the problem of eternal acceleration

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C. Rubano, P. Scudellaro*, and E. Piedipalumbo
Dipartimento di Scienze Fisiche, Università di Napoli, Complesso Universitario di Monte S. Angelo, Via Cintia, Ed. N, I-80126 Napoli, Italy
Istituto Nazionale di Fisica Nucleare, Sez. Napoli, Complesso Universitario di Monte Sant’Angelo, Via Cintia, Ed. G, I-80126 Napoli, Italy

S. Capozziello
Dipartimento di Fisica “E.R. Caianiello” – Univ. di Salerno and Istituto Nazionale di Fisica Nucleare, Sez. Napoli, Complesso Universitario di Monte Sant’Angelo, Via Cintia, Ed. G, I-80126 Napoli, Italy

Received 25 June 2003; published 3 December 2003

We present a dark energy model with a double exponential potential for a minimally coupled scalar field, which allows general exact integration of the cosmological equations. The solution can perfectly emulate a Λ-term model at low-medium redshift, exhibits tracking behavior, and does not show eternal acceleration.

© 2003 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevD.68.123501
DOI:
10.1103/PhysRevD.68.123501
PACS:
98.80.Jk, 04.20.Jb, 98.80.Cq

*Email address: scud@na.infn.it

 
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