- Access by Xinjiang University
Primordial fluctuations from inflation with a triad of background gauge fields
Phys. Rev. D 85, 123504 – Published 4 June, 2012
DOI: https://doi.org/10.1103/PhysRevD.85.123504
Abstract
We study the linear perturbation of the recently proposed model of inflation where a uniform gauge-kinetic coupling of the inflaton to multiple vector fields breaks the cosmic no-hair conjecture while maintaining the isotropy. We derive the general quadratic action for the perturbation and calculate the power spectra of scalar and tensor modes at the end of inflation by in-in formalism. It is shown that the model predicts slightly red spectra and the tensor-to-scalar ratio tends to be suppressed. The comparison with the data from WMAP 7-year does not impose strong constraints on the parameters and both weak and strong gauge-field regimes are consistent with the current observations.
Article Text
References (36)
- A. Linde, Phys. Rev. D 49, 748 (1994).
- L. H. Ford, Phys. Rev. D 40, 967 (1989).
- T. S. Koivisto and D. F. Mota, J. Cosmol. Astropart. Phys. 08 (2008) 021.
- A. Golovnev, V. Mukhanov, and V. Vanchurin, J. Cosmol. Astropart. Phys. 06 (2008) 009.
- B. Himmetoglu, C. R. Contaldi, and M. Peloso, Phys. Rev. Lett. 102, 111301 (2009).
- T. S. Koivisto, D. F. Mota, and C. Pitrou, J. High Energy Phys. 09 (2009) 092.
- B. Himmetoglu, C. R. Contaldi, and M. Peloso, Phys. Rev. D 80, 123530 (2009).
- A. Golovnev, Phys. Rev. D 81, 023514 (2010)
- G. Esposito-Farese, C. Pitrou, and J.-P. Uzan, Phys. Rev. D 81, 063519 (2010).
- M.-a. Watanabe, S. Kanno, and J. Soda, Phys. Rev. Lett. 102, 191302 (2009).
- M. a. Watanabe, S. Kanno, and J. Soda, Prog. Theor. Phys. 123, 1041 (2010).
- S. Kanno, J. Soda, and M. a. Watanabe, J. Cosmol. Astropart. Phys. 12 (2009) 009.
- S. Kanno, J. Soda, and M. a. Watanabe, J. Cosmol. Astropart. Phys. 12 (2010) 024.
- P. V. Moniz and J. Ward, Classical Quantum Gravity 27, 235009 (2010).
- K. Murata and J. Soda, J. Cosmol. Astropart. Phys. 06 (2011) 037.
- T. Q. Do, W. F. Kao, and I. C. Lin, Phys. Rev. D 83, 123002 (2011).
- R. Emami, H. Firouzjahi, S. M. Sadegh Movahed, and M. Zarei, J. Cosmol. Astropart. Phys. 02 (2011) 005.
- J. M. Wagstaff and K. Dimopoulos, Phys. Rev. D 83, 023523 (2011).
- S. Hervik, D. F. Mota, and M. Thorsurd, J. High Energy Phys. 11 (2011) 146.
- T. Q. Do and W. F. Kao, Phys. Rev. D 84, 123009 (2011)
- K. Yamamoto, M. a. Watanabe, and J. Soda, arXiv:1201.5309.
- A. Maleknejad and M. M. Sheikh-Jabbari, Phys. Rev. D 84, 043515 (2011).
- P. Adshead and M. Wyman, arXiv:1202.2366.
- P. Adshead and M. Wyman, arXiv:1203.2264.
- M. M. Sheikh-Jabbari, arXiv:1203.2265.
- B. Ratra, Astrophys. J. 391, L1 (1992).
- V. Demozzi, V. Mukhanov, and H. Rubinstein, J. Cosmol. Astropart. Phys. 08 (2009) 025.
- J. L. Cook and L. Sorbo, Phys. Rev. D 85, 023534 (2012)
- N. Barnaby, R. Namba, and M. Peloso, arXiv:1202.1469.
- T. R. Dulaney and M. I. Gresham, Phys. Rev. D 81, 103532 (2010).
- A. E. Gumrukcuoglu, B. Himmetoglu, and M. Peloso, Phys. Rev. D 81, 063528 (2010).
- R. Arnowitt, S. Deser, and C. W. Misner, Gravitation: An Introduction to Current Research (Wiley, New York, 1962), chapter. 7, p. 227.
- H. Feldman, V. Mukhanov, and R. Brandenberger, Phys. Rep. 215, 203 (1992).
- K. Malik and D. Wands, Phys. Rep. 475, 1 (2009).
- H. Kodama and M. Sasaki, Prog. Theor. Phys. 78, 1 (1984).
- E. Komatsu et al., Astrophys. J. Suppl. Ser. 192, 18 (2011).