On big rip singularities

Modern Physics Letters A

Volumn 19, Issue 33, 2004, Pages 2479-2484

  Chimento, L P ^a   Lazkoz, Ruth ^b  

^a UNIVERSIDAD DE BUENOS AIRES   (Argentina)

^b UNIVERSITY OF THE BASQUE COUNTRY UPV EHU   (Spain)

Author keywords

[No Author keywords available]

Indexed keywords

ARTICLE; DENSITY; ENERGY; KINETICS; MATHEMATICAL ANALYSIS; MATHEMATICAL MODEL; PHANTOM; PRESSURE; STATISTICAL ANALYSIS;

EID: 8644254158     PISSN: 02177323     EISSN: None     Source Type: Journal    
DOI: 10.1142/S0217732304015646     Document Type: Article

References (31)

1. R. R. Caldwell, Phys. Lett. B545, 23 (2002).
2. S. Nojiri and S. Odintsov, Phys. Lett. B571, 1 (2003); D. J. Liu and X. Z. Li, Phys. Rev. D68, 067301 (2003); S. Nojiri and S. D. Odintsov, Phys. Lett. B562, 147 (2003); P. Singh, M. Sami and N. Dadhich, Phys. Rev. D68, 023522 (2003); J. G. Hao and X. Z. Li, ibid. D68, 083514 (2003); Y.-S. Piao and E. Zhong, ibid. D68, 083515 (2003); M. P. Dabrowski, T. Stachowiak and M. Szydłowski, ibid. D68, 103519 (2003); P. F. González-Díaz, Phys. Lett. B586, 1 (2004); E. Elizalde and J. Quiroga Hurtado, Mod. Phys. Lett. A19, 29 (2004); A. Feinstein and S. Jhingan, ibid. A19, 457 (2004); X. Z. Li and J. G. Hao, hep-th/0303093; H. Stefancic, astro-ph/0310904; V. B. Johri, astro-ph/0311293; I. Brevik, S. Nojiri, S. D. Odintsov and L. Vanzo, hep-th/0401073; G. Calcagni hep-ph/0402126; S. Nojiri and S. D. Odintsov, astro-ph/0403622; Y.-S. Piao and Y.-Z. Zhang, astro-ph/0401231; Phys. Lett. B594, 247 (2004); astro-ph/0401231; J. G. Hao and X. Z. Li, astro-ph/0404154.
3. S. Nojiri and S. Odintsov, Phys. Lett. B571, 1 (2003); D. J. Liu and X. Z. Li, Phys. Rev. D68, 067301 (2003); S. Nojiri and S. D. Odintsov, Phys. Lett. B562, 147 (2003); P. Singh, M. Sami and N. Dadhich, Phys. Rev. D68, 023522 (2003); J. G. Hao and X. Z. Li, ibid. D68, 083514 (2003); Y.-S. Piao and E. Zhong, ibid. D68, 083515 (2003); M. P. Dabrowski, T. Stachowiak and M. Szydłowski, ibid. D68, 103519 (2003); P. F. González-Díaz, Phys. Lett. B586, 1 (2004); E. Elizalde and J. Quiroga Hurtado, Mod. Phys. Lett. A19, 29 (2004); A. Feinstein and S. Jhingan, ibid. A19, 457 (2004); X. Z. Li and J. G. Hao, hep-th/0303093; H. Stefancic, astro-ph/0310904; V. B. Johri, astro-ph/0311293; I. Brevik, S. Nojiri, S. D. Odintsov and L. Vanzo, hep-th/0401073; G. Calcagni hep-ph/0402126; S. Nojiri and S. D. Odintsov, astro-ph/0403622; Y.-S. Piao and Y.-Z. Zhang, astro-ph/0401231; Phys. Lett. B594, 247 (2004); astro-ph/0401231; J. G. Hao and X. Z. Li, astro-ph/0404154.
4. S. Nojiri and S. Odintsov, Phys. Lett. B571, 1 (2003); D. J. Liu and X. Z. Li, Phys. Rev. D68, 067301 (2003); S. Nojiri and S. D. Odintsov, Phys. Lett. B562, 147 (2003); P. Singh, M. Sami and N. Dadhich, Phys. Rev. D68, 023522 (2003); J. G. Hao and X. Z. Li, ibid. D68, 083514 (2003); Y.-S. Piao and E. Zhong, ibid. D68, 083515 (2003); M. P. Dabrowski, T. Stachowiak and M. Szydłowski, ibid. D68, 103519 (2003); P. F. González-Díaz, Phys. Lett. B586, 1 (2004); E. Elizalde and J. Quiroga Hurtado, Mod. Phys. Lett. A19, 29 (2004); A. Feinstein and S. Jhingan, ibid. A19, 457 (2004); X. Z. Li and J. G. Hao, hep-th/0303093; H. Stefancic, astro-ph/0310904; V. B. Johri, astro-ph/0311293; I. Brevik, S. Nojiri, S. D. Odintsov and L. Vanzo, hep-th/0401073; G. Calcagni hep-ph/0402126; S. Nojiri and S. D. Odintsov, astro-ph/0403622; Y.-S. Piao and Y.-Z. Zhang, astro-ph/0401231; Phys. Lett. B594, 247 (2004); astro-ph/0401231; J. G. Hao and X. Z. Li, astro-ph/0404154.
5. S. Nojiri and S. Odintsov, Phys. Lett. B571, 1 (2003); D. J. Liu and X. Z. Li, Phys. Rev. D68, 067301 (2003); S. Nojiri and S. D. Odintsov, Phys. Lett. B562, 147 (2003); P. Singh, M. Sami and N. Dadhich, Phys. Rev. D68, 023522 (2003); J. G. Hao and X. Z. Li, ibid. D68, 083514 (2003); Y.-S. Piao and E. Zhong, ibid. D68, 083515 (2003); M. P. Dabrowski, T. Stachowiak and M. Szydłowski, ibid. D68, 103519 (2003); P. F. González-Díaz, Phys. Lett. B586, 1 (2004); E. Elizalde and J. Quiroga Hurtado, Mod. Phys. Lett. A19, 29 (2004); A. Feinstein and S. Jhingan, ibid. A19, 457 (2004); X. Z. Li and J. G. Hao, hep-th/0303093; H. Stefancic, astro-ph/0310904; V. B. Johri, astro-ph/0311293; I. Brevik, S. Nojiri, S. D. Odintsov and L. Vanzo, hep-th/0401073; G. Calcagni hep-ph/0402126; S. Nojiri and S. D. Odintsov, astro-ph/0403622; Y.-S. Piao and Y.-Z. Zhang, astro-ph/0401231; Phys. Lett. B594, 247 (2004); astro-ph/0401231; J. G. Hao and X. Z. Li, astro-ph/0404154.
6. S. Nojiri and S. Odintsov, Phys. Lett. B571, 1 (2003); D. J. Liu and X. Z. Li, Phys. Rev. D68, 067301 (2003); S. Nojiri and S. D. Odintsov, Phys. Lett. B562, 147 (2003); P. Singh, M. Sami and N. Dadhich, Phys. Rev. D68, 023522 (2003); J. G. Hao and X. Z. Li, ibid. D68, 083514 (2003); Y.-S. Piao and E. Zhong, ibid. D68, 083515 (2003); M. P. Dabrowski, T. Stachowiak and M. Szydłowski, ibid. D68, 103519 (2003); P. F. González-Díaz, Phys. Lett. B586, 1 (2004); E. Elizalde and J. Quiroga Hurtado, Mod. Phys. Lett. A19, 29 (2004); A. Feinstein and S. Jhingan, ibid. A19, 457 (2004); X. Z. Li and J. G. Hao, hep-th/0303093; H. Stefancic, astro-ph/0310904; V. B. Johri, astro-ph/0311293; I. Brevik, S. Nojiri, S. D. Odintsov and L. Vanzo, hep-th/0401073; G. Calcagni hep-ph/0402126; S. Nojiri and S. D. Odintsov, astro-ph/0403622; Y.-S. Piao and Y.-Z. Zhang, astro-ph/0401231; Phys. Lett. B594, 247 (2004); astro-ph/0401231; J. G. Hao and X. Z. Li, astro-ph/0404154.
7. S. Nojiri and S. Odintsov, Phys. Lett. B571, 1 (2003); D. J. Liu and X. Z. Li, Phys. Rev. D68, 067301 (2003); S. Nojiri and S. D. Odintsov, Phys. Lett. B562, 147 (2003); P. Singh, M. Sami and N. Dadhich, Phys. Rev. D68, 023522 (2003); J. G. Hao and X. Z. Li, ibid. D68, 083514 (2003); Y.-S. Piao and E. Zhong, ibid. D68, 083515 (2003); M. P. Dabrowski, T. Stachowiak and M. Szydłowski, ibid. D68, 103519 (2003); P. F. González-Díaz, Phys. Lett. B586, 1 (2004); E. Elizalde and J. Quiroga Hurtado, Mod. Phys. Lett. A19, 29 (2004); A. Feinstein and S. Jhingan, ibid. A19, 457 (2004); X. Z. Li and J. G. Hao, hep-th/0303093; H. Stefancic, astro-ph/0310904; V. B. Johri, astro-ph/0311293; I. Brevik, S. Nojiri, S. D. Odintsov and L. Vanzo, hep-th/0401073; G. Calcagni hep-ph/0402126; S. Nojiri and S. D. Odintsov, astro-ph/0403622; Y.-S. Piao and Y.-Z. Zhang, astro-ph/0401231; Phys. Lett. B594, 247 (2004); astro-ph/0401231; J. G. Hao and X. Z. Li, astro-ph/0404154.
8. S. Nojiri and S. Odintsov, Phys. Lett. B571, 1 (2003); D. J. Liu and X. Z. Li, Phys. Rev. D68, 067301 (2003); S. Nojiri and S. D. Odintsov, Phys. Lett. B562, 147 (2003); P. Singh, M. Sami and N. Dadhich, Phys. Rev. D68, 023522 (2003); J. G. Hao and X. Z. Li, ibid. D68, 083514 (2003); Y.-S. Piao and E. Zhong, ibid. D68, 083515 (2003); M. P. Dabrowski, T. Stachowiak and M. Szydłowski, ibid. D68, 103519 (2003); P. F. González-Díaz, Phys. Lett. B586, 1 (2004); E. Elizalde and J. Quiroga Hurtado, Mod. Phys. Lett. A19, 29 (2004); A. Feinstein and S. Jhingan, ibid. A19, 457 (2004); X. Z. Li and J. G. Hao, hep-th/0303093; H. Stefancic, astro-ph/0310904; V. B. Johri, astro-ph/0311293; I. Brevik, S. Nojiri, S. D. Odintsov and L. Vanzo, hep-th/0401073; G. Calcagni hep-ph/0402126; S. Nojiri and S. D. Odintsov, astro-ph/0403622; Y.-S. Piao and Y.-Z. Zhang, astro-ph/0401231; Phys. Lett. B594, 247 (2004); astro-ph/0401231; J. G. Hao and X. Z. Li, astro-ph/0404154.
9. S. Nojiri and S. Odintsov, Phys. Lett. B571, 1 (2003); D. J. Liu and X. Z. Li, Phys. Rev. D68, 067301 (2003); S. Nojiri and S. D. Odintsov, Phys. Lett. B562, 147 (2003); P. Singh, M. Sami and N. Dadhich, Phys. Rev. D68, 023522 (2003); J. G. Hao and X. Z. Li, ibid. D68, 083514 (2003); Y.-S. Piao and E. Zhong, ibid. D68, 083515 (2003); M. P. Dabrowski, T. Stachowiak and M. Szydłowski, ibid. D68, 103519 (2003); P. F. González-Díaz, Phys. Lett. B586, 1 (2004); E. Elizalde and J. Quiroga Hurtado, Mod. Phys. Lett. A19, 29 (2004); A. Feinstein and S. Jhingan, ibid. A19, 457 (2004); X. Z. Li and J. G. Hao, hep-th/0303093; H. Stefancic, astro-ph/0310904; V. B. Johri, astro-ph/0311293; I. Brevik, S. Nojiri, S. D. Odintsov and L. Vanzo, hep-th/0401073; G. Calcagni hep-ph/0402126; S. Nojiri and S. D. Odintsov, astro-ph/0403622; Y.-S. Piao and Y.-Z. Zhang, astro-ph/0401231; Phys. Lett. B594, 247 (2004); astro-ph/0401231; J. G. Hao and X. Z. Li, astro-ph/0404154.
10. S. Nojiri and S. Odintsov, Phys. Lett. B571, 1 (2003); D. J. Liu and X. Z. Li, Phys. Rev. D68, 067301 (2003); S. Nojiri and S. D. Odintsov, Phys. Lett. B562, 147 (2003); P. Singh, M. Sami and N. Dadhich, Phys. Rev. D68, 023522 (2003); J. G. Hao and X. Z. Li, ibid. D68, 083514 (2003); Y.-S. Piao and E. Zhong, ibid. D68, 083515 (2003); M. P. Dabrowski, T. Stachowiak and M. Szydłowski, ibid. D68, 103519 (2003); P. F. González-Díaz, Phys. Lett. B586, 1 (2004); E. Elizalde and J. Quiroga Hurtado, Mod. Phys. Lett. A19, 29 (2004); A. Feinstein and S. Jhingan, ibid. A19, 457 (2004); X. Z. Li and J. G. Hao, hep-th/0303093; H. Stefancic, astro-ph/0310904; V. B. Johri, astro-ph/0311293; I. Brevik, S. Nojiri, S. D. Odintsov and L. Vanzo, hep-th/0401073; G. Calcagni hep-ph/0402126; S. Nojiri and S. D. Odintsov, astro-ph/0403622; Y.-S. Piao and Y.-Z. Zhang, astro-ph/0401231; Phys. Lett. B594, 247 (2004); astro-ph/0401231; J. G. Hao and X. Z. Li, astro-ph/0404154.
11. S. Nojiri and S. Odintsov, Phys. Lett. B571, 1 (2003); D. J. Liu and X. Z. Li, Phys. Rev. D68, 067301 (2003); S. Nojiri and S. D. Odintsov, Phys. Lett. B562, 147 (2003); P. Singh, M. Sami and N. Dadhich, Phys. Rev. D68, 023522 (2003); J. G. Hao and X. Z. Li, ibid. D68, 083514 (2003); Y.-S. Piao and E. Zhong, ibid. D68, 083515 (2003); M. P. Dabrowski, T. Stachowiak and M. Szydłowski, ibid. D68, 103519 (2003); P. F. González-Díaz, Phys. Lett. B586, 1 (2004); E. Elizalde and J. Quiroga Hurtado, Mod. Phys. Lett. A19, 29 (2004); A. Feinstein and S. Jhingan, ibid. A19, 457 (2004); X. Z. Li and J. G. Hao, hep-th/0303093; H. Stefancic, astro-ph/0310904; V. B. Johri, astro-ph/0311293; I. Brevik, S. Nojiri, S. D. Odintsov and L. Vanzo, hep-th/0401073; G. Calcagni hep-ph/0402126; S. Nojiri and S. D. Odintsov, astro-ph/0403622; Y.-S. Piao and Y.-Z. Zhang, astro-ph/0401231; Phys. Lett. B594, 247 (2004); astro-ph/0401231; J. G. Hao and X. Z. Li, astro-ph/0404154.
12. S. Nojiri and S. Odintsov, Phys. Lett. B571, 1 (2003); D. J. Liu and X. Z. Li, Phys. Rev. D68, 067301 (2003); S. Nojiri and S. D. Odintsov, Phys. Lett. B562, 147 (2003); P. Singh, M. Sami and N. Dadhich, Phys. Rev. D68, 023522 (2003); J. G. Hao and X. Z. Li, ibid. D68, 083514 (2003); Y.-S. Piao and E. Zhong, ibid. D68, 083515 (2003); M. P. Dabrowski, T. Stachowiak and M. Szydłowski, ibid. D68, 103519 (2003); P. F. González-Díaz, Phys. Lett. B586, 1 (2004); E. Elizalde and J. Quiroga Hurtado, Mod. Phys. Lett. A19, 29 (2004); A. Feinstein and S. Jhingan, ibid. A19, 457 (2004); X. Z. Li and J. G. Hao, hep-th/0303093; H. Stefancic, astro-ph/0310904; V. B. Johri, astro-ph/0311293; I. Brevik, S. Nojiri, S. D. Odintsov and L. Vanzo, hep-th/0401073; G. Calcagni hep-ph/0402126; S. Nojiri and S. D. Odintsov, astro-ph/0403622; Y.-S. Piao and Y.-Z. Zhang, astro-ph/0401231; Phys. Lett. B594, 247 (2004); astro-ph/0401231; J. G. Hao and X. Z. Li, astro-ph/0404154.
13. S. Nojiri and S. Odintsov, Phys. Lett. B571, 1 (2003); D. J. Liu and X. Z. Li, Phys. Rev. D68, 067301 (2003); S. Nojiri and S. D. Odintsov, Phys. Lett. B562, 147 (2003); P. Singh, M. Sami and N. Dadhich, Phys. Rev. D68, 023522 (2003); J. G. Hao and X. Z. Li, ibid. D68, 083514 (2003); Y.-S. Piao and E. Zhong, ibid. D68, 083515 (2003); M. P. Dabrowski, T. Stachowiak and M. Szydłowski, ibid. D68, 103519 (2003); P. F. González-Díaz, Phys. Lett. B586, 1 (2004); E. Elizalde and J. Quiroga Hurtado, Mod. Phys. Lett. A19, 29 (2004); A. Feinstein and S. Jhingan, ibid. A19, 457 (2004); X. Z. Li and J. G. Hao, hep-th/0303093; H. Stefancic, astro-ph/0310904; V. B. Johri, astro-ph/0311293; I. Brevik, S. Nojiri, S. D. Odintsov and L. Vanzo, hep-th/0401073; G. Calcagni hep-ph/0402126; S. Nojiri and S. D. Odintsov, astro-ph/0403622; Y.-S. Piao and Y.-Z. Zhang, astro-ph/0401231; Phys. Lett. B594, 247 (2004); astro-ph/0401231; J. G. Hao and X. Z. Li, astro-ph/0404154.
14. S. Nojiri and S. Odintsov, Phys. Lett. B571, 1 (2003); D. J. Liu and X. Z. Li, Phys. Rev. D68, 067301 (2003); S. Nojiri and S. D. Odintsov, Phys. Lett. B562, 147 (2003); P. Singh, M. Sami and N. Dadhich, Phys. Rev. D68, 023522 (2003); J. G. Hao and X. Z. Li, ibid. D68, 083514 (2003); Y.-S. Piao and E. Zhong, ibid. D68, 083515 (2003); M. P. Dabrowski, T. Stachowiak and M. Szydłowski, ibid. D68, 103519 (2003); P. F. González-Díaz, Phys. Lett. B586, 1 (2004); E. Elizalde and J. Quiroga Hurtado, Mod. Phys. Lett. A19, 29 (2004); A. Feinstein and S. Jhingan, ibid. A19, 457 (2004); X. Z. Li and J. G. Hao, hep-th/0303093; H. Stefancic, astro-ph/0310904; V. B. Johri, astro-ph/0311293; I. Brevik, S. Nojiri, S. D. Odintsov and L. Vanzo, hep-th/0401073; G. Calcagni hep-ph/0402126; S. Nojiri and S. D. Odintsov, astro-ph/0403622; Y.-S. Piao and Y.-Z. Zhang, astro-ph/0401231; Phys. Lett. B594, 247 (2004); astro-ph/0401231; J. G. Hao and X. Z. Li, astro-ph/0404154.
15. S. Nojiri and S. Odintsov, Phys. Lett. B571, 1 (2003); D. J. Liu and X. Z. Li, Phys. Rev. D68, 067301 (2003); S. Nojiri and S. D. Odintsov, Phys. Lett. B562, 147 (2003); P. Singh, M. Sami and N. Dadhich, Phys. Rev. D68, 023522 (2003); J. G. Hao and X. Z. Li, ibid. D68, 083514 (2003); Y.-S. Piao and E. Zhong, ibid. D68, 083515 (2003); M. P. Dabrowski, T. Stachowiak and M. Szydłowski, ibid. D68, 103519 (2003); P. F. González-Díaz, Phys. Lett. B586, 1 (2004); E. Elizalde and J. Quiroga Hurtado, Mod. Phys. Lett. A19, 29 (2004); A. Feinstein and S. Jhingan, ibid. A19, 457 (2004); X. Z. Li and J. G. Hao, hep-th/0303093; H. Stefancic, astro-ph/0310904; V. B. Johri, astro-ph/0311293; I. Brevik, S. Nojiri, S. D. Odintsov and L. Vanzo, hep-th/0401073; G. Calcagni hep-ph/0402126; S. Nojiri and S. D. Odintsov, astro-ph/0403622; Y.-S. Piao and Y.-Z. Zhang, astro-ph/0401231; Phys. Lett. B594, 247 (2004); astro-ph/0401231; J. G. Hao and X. Z. Li, astro-ph/0404154.
16. S. Nojiri and S. Odintsov, Phys. Lett. B571, 1 (2003); D. J. Liu and X. Z. Li, Phys. Rev. D68, 067301 (2003); S. Nojiri and S. D. Odintsov, Phys. Lett. B562, 147 (2003); P. Singh, M. Sami and N. Dadhich, Phys. Rev. D68, 023522 (2003); J. G. Hao and X. Z. Li, ibid. D68, 083514 (2003); Y.-S. Piao and E. Zhong, ibid. D68, 083515 (2003); M. P. Dabrowski, T. Stachowiak and M. Szydłowski, ibid. D68, 103519 (2003); P. F. González-Díaz, Phys. Lett. B586, 1 (2004); E. Elizalde and J. Quiroga Hurtado, Mod. Phys. Lett. A19, 29 (2004); A. Feinstein and S. Jhingan, ibid. A19, 457 (2004); X. Z. Li and J. G. Hao, hep-th/0303093; H. Stefancic, astro-ph/0310904; V. B. Johri, astro-ph/0311293; I. Brevik, S. Nojiri, S. D. Odintsov and L. Vanzo, hep-th/0401073; G. Calcagni hep-ph/0402126; S. Nojiri and S. D. Odintsov, astro-ph/0403622; Y.-S. Piao and Y.-Z. Zhang, astro-ph/0401231; Phys. Lett. B594, 247 (2004); astro-ph/0401231; J. G. Hao and X. Z. Li, astro-ph/0404154.
17. S. Nojiri and S. Odintsov, Phys. Lett. B571, 1 (2003); D. J. Liu and X. Z. Li, Phys. Rev. D68, 067301 (2003); S. Nojiri and S. D. Odintsov, Phys. Lett. B562, 147 (2003); P. Singh, M. Sami and N. Dadhich, Phys. Rev. D68, 023522 (2003); J. G. Hao and X. Z. Li, ibid. D68, 083514 (2003); Y.-S. Piao and E. Zhong, ibid. D68, 083515 (2003); M. P. Dabrowski, T. Stachowiak and M. Szydłowski, ibid. D68, 103519 (2003); P. F. González-Díaz, Phys. Lett. B586, 1 (2004); E. Elizalde and J. Quiroga Hurtado, Mod. Phys. Lett. A19, 29 (2004); A. Feinstein and S. Jhingan, ibid. A19, 457 (2004); X. Z. Li and J. G. Hao, hep-th/0303093; H. Stefancic, astro-ph/0310904; V. B. Johri, astro-ph/0311293; I. Brevik, S. Nojiri, S. D. Odintsov and L. Vanzo, hep-th/0401073; G. Calcagni hep-ph/0402126; S. Nojiri and S. D. Odintsov, astro-ph/0403622; Y.-S. Piao and Y.-Z. Zhang, astro-ph/0401231; Phys. Lett. B594, 247 (2004); astro-ph/0401231; J. G. Hao and X. Z. Li, astro-ph/0404154.
18. S. Nojiri and S. Odintsov, Phys. Lett. B571, 1 (2003); D. J. Liu and X. Z. Li, Phys. Rev. D68, 067301 (2003); S. Nojiri and S. D. Odintsov, Phys. Lett. B562, 147 (2003); P. Singh, M. Sami and N. Dadhich, Phys. Rev. D68, 023522 (2003); J. G. Hao and X. Z. Li, ibid. D68, 083514 (2003); Y.-S. Piao and E. Zhong, ibid. D68, 083515 (2003); M. P. Dabrowski, T. Stachowiak and M. Szydłowski, ibid. D68, 103519 (2003); P. F. González-Díaz, Phys. Lett. B586, 1 (2004); E. Elizalde and J. Quiroga Hurtado, Mod. Phys. Lett. A19, 29 (2004); A. Feinstein and S. Jhingan, ibid. A19, 457 (2004); X. Z. Li and J. G. Hao, hep-th/0303093; H. Stefancic, astro-ph/0310904; V. B. Johri, astro-ph/0311293; I. Brevik, S. Nojiri, S. D. Odintsov and L. Vanzo, hep-th/0401073; G. Calcagni hep-ph/0402126; S. Nojiri and S. D. Odintsov, astro-ph/0403622; Y.-S. Piao and Y.-Z. Zhang, astro-ph/0401231; Phys. Lett. B594, 247 (2004); astro-ph/0401231; J. G. Hao and X. Z. Li, astro-ph/0404154.
19. S. Nojiri and S. Odintsov, Phys. Lett. B571, 1 (2003); D. J. Liu and X. Z. Li, Phys. Rev. D68, 067301 (2003); S. Nojiri and S. D. Odintsov, Phys. Lett. B562, 147 (2003); P. Singh, M. Sami and N. Dadhich, Phys. Rev. D68, 023522 (2003); J. G. Hao and X. Z. Li, ibid. D68, 083514 (2003); Y.-S. Piao and E. Zhong, ibid. D68, 083515 (2003); M. P. Dabrowski, T. Stachowiak and M. Szydłowski, ibid. D68, 103519 (2003); P. F. González-Díaz, Phys. Lett. B586, 1 (2004); E. Elizalde and J. Quiroga Hurtado, Mod. Phys. Lett. A19, 29 (2004); A. Feinstein and S. Jhingan, ibid. A19, 457 (2004); X. Z. Li and J. G. Hao, hep-th/0303093; H. Stefancic, astro-ph/0310904; V. B. Johri, astro-ph/0311293; I. Brevik, S. Nojiri, S. D. Odintsov and L. Vanzo, hep-th/0401073; G. Calcagni hep-ph/0402126; S. Nojiri and S. D. Odintsov, astro-ph/0403622; Y.-S. Piao and Y.-Z. Zhang, astro-ph/0401231; Phys. Lett. B594, 247 (2004); astro-ph/0401231; J. G. Hao and X. Z. Li, astro-ph/0404154.
20. S. Nojiri and S. Odintsov, Phys. Lett. B571, 1 (2003); D. J. Liu and X. Z. Li, Phys. Rev. D68, 067301 (2003); S. Nojiri and S. D. Odintsov, Phys. Lett. B562, 147 (2003); P. Singh, M. Sami and N. Dadhich, Phys. Rev. D68, 023522 (2003); J. G. Hao and X. Z. Li, ibid. D68, 083514 (2003); Y.-S. Piao and E. Zhong, ibid. D68, 083515 (2003); M. P. Dabrowski, T. Stachowiak and M. Szydłowski, ibid. D68, 103519 (2003); P. F. González-Díaz, Phys. Lett. B586, 1 (2004); E. Elizalde and J. Quiroga Hurtado, Mod. Phys. Lett. A19, 29 (2004); A. Feinstein and S. Jhingan, ibid. A19, 457 (2004); X. Z. Li and J. G. Hao, hep-th/0303093; H. Stefancic, astro-ph/0310904; V. B. Johri, astro-ph/0311293; I. Brevik, S. Nojiri, S. D. Odintsov and L. Vanzo, hep-th/0401073; G. Calcagni hep-ph/0402126; S. Nojiri and S. D. Odintsov, astro-ph/0403622; Y.-S. Piao and Y.-Z. Zhang, astro-ph/0401231; Phys. Lett. B594, 247 (2004); astro-ph/0401231; J. G. Hao and X. Z. Li, astro-ph/0404154.
21. R. R. Caldwell, M. Kamionkowski and N. N. Weinberg, Phys. Rev. Lett. 91, 071301 (2003); P. F. González-Díaz, Phys. Rev. D68, 021303 (2003); V. Sahni and Y. Shtanov, J. Cosm. Astro. Phys. 0311, 014 (2003); J. G. Hao and X. Z. Li, astro-ph/0309746; A. Yurov, astro-ph/0305019; M. Sami and A. Toporensky, gr-qc/0312009; M. Bouhmadi-López and J. A. Jiménez Madrid, astro-ph/0404540.
22. R. R. Caldwell, M. Kamionkowski and N. N. Weinberg, Phys. Rev. Lett. 91, 071301 (2003); P. F. González-Díaz, Phys. Rev. D68, 021303 (2003); V. Sahni and Y. Shtanov, J. Cosm. Astro. Phys. 0311, 014 (2003); J. G. Hao and X. Z. Li, astro-ph/0309746; A. Yurov, astro-ph/0305019; M. Sami and A. Toporensky, gr-qc/0312009; M. Bouhmadi-López and J. A. Jiménez Madrid, astro-ph/0404540.
23. R. R. Caldwell, M. Kamionkowski and N. N. Weinberg, Phys. Rev. Lett. 91, 071301 (2003); P. F. González-Díaz, Phys. Rev. D68, 021303 (2003); V. Sahni and Y. Shtanov, J. Cosm. Astro. Phys. 0311, 014 (2003); J. G. Hao and X. Z. Li, astro-ph/0309746; A. Yurov, astro-ph/0305019; M. Sami and A. Toporensky, gr-qc/0312009; M. Bouhmadi-López and J. A. Jiménez Madrid, astro-ph/0404540.
24. R. R. Caldwell, M. Kamionkowski and N. N. Weinberg, Phys. Rev. Lett. 91, 071301 (2003); P. F. González-Díaz, Phys. Rev. D68, 021303 (2003); V. Sahni and Y. Shtanov, J. Cosm. Astro. Phys. 0311, 014 (2003); J. G. Hao and X. Z. Li, astro-ph/0309746; A. Yurov, astro-ph/0305019; M. Sami and A. Toporensky, gr-qc/0312009; M. Bouhmadi-López and J. A. Jiménez Madrid, astro-ph/0404540.
25. R. R. Caldwell, M. Kamionkowski and N. N. Weinberg, Phys. Rev. Lett. 91, 071301 (2003); P. F. González-Díaz, Phys. Rev. D68, 021303 (2003); V. Sahni and Y. Shtanov, J. Cosm. Astro. Phys. 0311, 014 (2003); J. G. Hao and X. Z. Li, astro-ph/0309746; A. Yurov, astro-ph/0305019; M. Sami and A. Toporensky, gr-qc/0312009; M. Bouhmadi-López and J. A. Jiménez Madrid, astro-ph/0404540.
26. R. R. Caldwell, M. Kamionkowski and N. N. Weinberg, Phys. Rev. Lett. 91, 071301 (2003); P. F. González-Díaz, Phys. Rev. D68, 021303 (2003); V. Sahni and Y. Shtanov, J. Cosm. Astro. Phys. 0311, 014 (2003); J. G. Hao and X. Z. Li, astro-ph/0309746; A. Yurov, astro-ph/0305019; M. Sami and A. Toporensky, gr-qc/0312009; M. Bouhmadi-López and J. A. Jiménez Madrid, astro-ph/0404540.
27. R. R. Caldwell, M. Kamionkowski and N. N. Weinberg, Phys. Rev. Lett. 91, 071301 (2003); P. F. González-Díaz, Phys. Rev. D68, 021303 (2003); V. Sahni and Y. Shtanov, J. Cosm. Astro. Phys. 0311, 014 (2003); J. G. Hao and X. Z. Li, astro-ph/0309746; A. Yurov, astro-ph/0305019; M. Sami and A. Toporensky, gr-qc/0312009; M. Bouhmadi-López and J. A. Jiménez Madrid, astro-ph/0404540.
28. L. P. Chimento and R. Lazkoz, Phys. Rev. Lett. 91, 211301 (2003).
29. J. D. Barrow, Class. Quantum Grav. 21, L79 (2004).
30. P. R. Anderson, Phys. Rev. D33, 1567 (1986).
31. G. M. Kremer, Phys. Rev. D68, 123507 (2003); gr-qc/0401060.