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The Quantum State of Inflationary Perturbations

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arxiv 1209.3092 v1 pith:P6RCSFJ5 submitted 2012-09-14 hep-th astro-ph.COhep-phquant-ph

Jerome Martin (Institut d'Astrophysique de Paris) This is my paper · ORCID
classification hep-thastro-ph.COhep-phquant-ph
keywords stateinflationaryquantumperturbationspropertiesarticlebackgroundbrief
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This article reviews the properties of the quantum state of inflationary perturbations. After a brief description of the inflationary background, the wavefunction of the Mukhanov-Sasaki variable is calculated and shown to be that of a strongly squeezed state. The corresponding Wigner function and density matrix, which are convenient tools to characterize the properties of a quantum state, are also evaluated. Finally, the issue of definite outcomes for inflation is discussed.

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  1. Stochastic inflation and non-perturbative power spectrum beyond slow roll

    astro-ph.CO 2024-11 conditional novelty 5.0 of 10

    A numerical stochastic ΔN code reproduces the slow-roll power spectrum and shows that the time-independent non-perturbative spectrum fails at ultra-slow-roll transitions.

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