Computation of the power spectrum in chaotic ¼λϕ<sup>4</sup>inflation
Computation of the power spectrum in chaotic ¼λϕ<sup>4</sup>inflation
The phase-integral approximation devised by Fröman and Fröman, is used for computing cosmological perturbations in the quartic chaotic inflationary model. The phase-integral formulas for the scalar power spectrum are explicitly obtained up to fifth order of the phase-integral approximation. As in previous reports (Rojas 2007b, 2007c & 2009), we point …