Generalized slow roll for noncanonical kinetic terms

@article{Hu2011GeneralizedSR,
  title={Generalized slow roll for noncanonical kinetic terms},
  author={W. Hu},
  journal={Physical Review D},
  year={2011},
  volume={84}
}
  • W. Hu
  • Published 2011
  • Physics
  • Physical Review D
  • We show that the generalized slow-roll approach for calculating the power spectrum where the inflationary slow roll parameters are neither small nor slowly varying can be readily extended to models with non-canonical kinetic terms in the inflaton action. For example, rapid sound speed variations can arise in DBI models with features in the warp factor leading to features in the power spectrum. Nonetheless there remains a single source function for deviations that is simply related to the power… CONTINUE READING

    References

    Publications referenced by this paper.
    SHOWING 1-10 OF 16 REFERENCES
    JCAP
    • 2008
    Phys
    • 2010
    A and V
    34705
    JCAP
    • 2007
    JCAP
    • 2004
    Phys
    • 2005
    Phys
    • 2002
    Phys
    • 2002
    Phys. Rev
    • 2002
    Phys. Rev
    • 2010