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

Clara Rojas, Victor Manuel Villalba Rojas

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2 Citations (Scopus)


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.
Original languageEnglish
Pages (from-to)1 - 13
Number of pages13
JournalJournal of Cosmology and Astroparticle Physics
Issue number1
Publication statusPublished - 2012

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