TY - JOUR

T1 - Computation of the power spectrum in chaotic 1/4 lambda phi(4) inflation

AU - Rojas, Clara

AU - Villalba Rojas, Victor Manuel

PY - 2012

Y1 - 2012

N2 - The phase-integral approximation devised by Froman and Froman, 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 [1-3], we point out that the accuracy of the phase-integral approximation compares favorably with the numerical results and those obtained using the slow-roll and uniform approximation methods.

AB - The phase-integral approximation devised by Froman and Froman, 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 [1-3], we point out that the accuracy of the phase-integral approximation compares favorably with the numerical results and those obtained using the slow-roll and uniform approximation methods.

UR - http://iopscience.iop.org/1475-7516/2012/01/003/

U2 - 10.1088/1475-7516/2012/01/003

DO - 10.1088/1475-7516/2012/01/003

M3 - Article

VL - 2012

SP - 1

EP - 13

JO - Journal of Cosmology and Astroparticle Physics

JF - Journal of Cosmology and Astroparticle Physics

SN - 1475-7516

IS - 1

ER -