On the one loop corrections to inflation and the CMB anisotropies

2006/04/30 by Martin S. Sloth · 3 citations
Mathematics · Physics and Astronomy · #Anisotropy #Black Holes and Theoretical Physics #Cosmic microwave background #Cosmology and Gravitation Theories #De Sitter universe #Eternal inflation #Galaxies: Formation, Evolution, Phenomena #Inflation (cosmology) #Inflaton #Loop (graph theory) #Mathematics #Physics #Quantum electrodynamics #Quantum mechanics #Spectral density #Statistics #Theoretical physics #Universe #astro-ph #gr-qc #hep-th

paper · pdf · doi:10.1016/j.nuclphysb.2006.04.029

published as Nucl.Phys. B748 (2006) 149-169 · 23 pages, 6 figures. Typos corrected, references added

openalex publication_date 2006/06/06 · arxiv created 2006/08/04 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05

Abstract

We investigate the one loop effective potential of inflation in a standard model of chaotic inflation. The leading one loop corrections to the effective inflaton potential are evaluated in the quasi de Sitter background, and we estimate the one loop correction to the two-point function of the inflaton perturbations in the Hartree approximation. In this approximation, the one loop corrections depends on the total number of e-foldings of inflation and the maximal effect is estimated to be a correction to the power spectrum of a few percent. However, such a correction may be difficult to disentangle from the background in the simplest scenario.

Citations

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Cited by

• On loops in inflation
• Effective Potential for Quantum Scalar Fields in a de Sitter Geometry
• Open EFTs, IR effects & late-time resummations: systematic corrections in stochastic inflation