Oscillating universe from an inhomogeneous equation of state and coupled dark energy

Diego Saez-Gomez1

Abstract

Occurrence of an oscillating Universe is shown using an inhomogeneous equation of state for the dark energy fluid. The Hubble parameter described presents a periodic behavior, such that early and late-time acceleration are unified under the same mechanism. Also, we consider a coupling between the dark energy fluid, with a homogeneous and constant EoS, and matter, which also gives a periodic Universe. Possible phantom phases and future singularities are studied in the oscillating Universe under discussion. An equivalent scalar-tensor representation for the same oscillating Universe is presented.

References

  1. A. G. Riess, Astron. J. 116, 1009 (1998).
  2. S. Perlmutter, Astrophys. J. 517, 565 (1999).
  3. E. Copeland, M. Sami, and Shinji Tsujikawa, Int. J. Mod. Phys. D 15, 1753 (2006) [hep-th/0603057].
  4. T. Padmanabhan, astro-ph/0603114; astro-ph/0602117.
  5. S. Nojiri and S. D. Odintsov, hep-th/0601213.
  6. L. Perivolaropoulos, astro-ph/0601014.
  7. H. Jassal, J. Bagla and T. Padmanabhan, astro-ph/0506748.
  8. S. Nojiri and S. D. Odintsov, Phys. Rev. D 72, 103522 (2005) [hep-th/0505215].
  9. S. Capozziello, V. Cardone, E. Elizalde, S. Nojiri and S. D. Odintsov, Phys. Rev. D 73, 043512 (2006) [astro-ph/0508350].
  10. S. Nojiri and S. D. Odintsov, Phys. Lett. B 639, 144 (2006) [hep-th/0606025].
  11. I. Brevik, O. G. Gorbunova, and A. V. Timoshkin, Eur. Phys. J. C 51, 179-183 (2007) [gr-qc/0702089].
  12. I. Brevik, E. Elizalde, O. Gorbunova, and A. V. Timoshkin Eur. Phys. J. C 52, 223 (2007) [arXiv: 0706.2072].
  13. R. R. Caldwell, M. Kamionkowski, and N. N. Weinberg, Phys. Rev. Lett. 91, 071301 (2003) [astro-ph/0302506].
  14. B. McInnes, JHEP 0208, 029 (2002) [hep-th/0112066, hep-th/0502209].
  15. S. Nojiri and S. D. Odintsov, Phys. Lett. B 562, 147 (2003) [hep-th/0303117].
  16. S. Nojiri and S. D. Odintsov, Phys. Lett. B 565, 1 (2003) [hep-th/0304131].
  17. S. Nojiri and S. D. Odintsov, Phys. Lett. B 595, 1 (2004) [hep-th0405078].
  18. P. Gonzalez-Diaz, Phys. Lett. B586, 1 (2004) [astro-ph/0312579, hep-th/0408225].
  19. L. P. Chimento and R. Lazkoz, Phys. Rev. Lett. 91, 211301 (2003) [gr-qc/0307111].
  20. L. P. Chimento and R. Lazkoz, Mod. Phys. Lett. A19, 2479 (2004) [gr-qc/0405020].
  21. E. Babichev, V. Dokuchaev, and Yu. Eroshenko, Class. Quant. Grav. 22, 143 (2005) [astro-ph/0407190].
  22. X. Zhang, H. Li, Y. Piao, and X. Zhang, astro-ph/0501652.
  23. E. Elizalde, S. Nojiri, S. D. Odintsov, and P. Wang, Phys. Rev. D 71, 103504 (2005) [hep-th/0502082].
  24. E. Elizalde, S. Nojiri, and S. D. Odintsov, Phys. REv. D 70 043539 (2004) [hep-th/0405034].
  25. M. Dabrowski and T. Stachowiak, hep-th/0411199.
  26. F. Lobo, gr-qc/0502099.
  27. R.-G. Cai, H.-S. Zhang, and A. Wang, hep-th/0505186.
  28. I. Ya. Arefeva, A. S. Koshelev, and S. Yu. Vernov, astro-ph/0412619; astro-ph/0507067.
  29. W. Godlowski and M. Szydlowski, Phys. Lett. B 623, 10 (2005).
  30. J. Sola and H. Stefancic, astro-ph/0505133.
  31. B. Guberina, R. Horvat, and H. Nicolic, astro-ph/0507666.
  32. M. Dabrowski, C. Kiefer, and B. Sandhofer, Phys. Rev. D 74, 044022 (2006).
  33. E. Barboza and N. Lemos, gr-qc/0606084.
  34. M. Szydlowski, O. Hrycyna, and A. Krawiec, hep-th/0608219.
  35. W. Chakraborty and U. Debnath, arXiv: 0802.3751.
  36. A. Vikman, astro-ph/0407107.
  37. S. Nojiri and S. D. Odintsov, Gen. Rel. Grav. 38, 1285 (2006) [hep-th/0506212].
  38. S. Capozziello, S. Nojiri, and S. D. Odintsov, Phys. Lett. B 632, 597 (2006) [hep-th/0507182].
  39. E. Elizalde, S. Nojiri, S. D. Odintsov, D. Saez-Gomez, and V. Faraoni, hep-th/0803.1311.
  40. S. Nojiri and S. D. Odintsov, Phys. Lett. B 637, 139 (2006) [hep-th/0603062].
  41. Bo Feng, Migzhe Li, Yung-Son Piao, and Xinmin Zhang, Phys. Lett. B 634, 101, 2006) [astro-ph/0407432].;
  42. G. Yang and A. Wang, Gen. Rel. Grav. 37, 2201 (2005) [astro-ph/0510006].
  43. I. Aref'eva, P. H. Frampton and S. Matsuzaki, hep-th/0802.1294.
  44. Z. K. Guo, N. Ohta and S. Tsujikawa, Phys. Rev. D 76, 023508 (2007) [astro-ph/0702015].
  45. S. Nojiri, S. D. Odintsov, and S. Tsujikawa, Phys. Rev. D 71, 063004 (2005) [hep-th/0501025].
  46. S. Capozziello, S. Nojiri, and S. D. Odintsov, Phys. Lett. B 634, 93 (2006) [hep-th/0512118].
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