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Decoherence during Inflation: the generation of classical inhomogeneities

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arxiv gr-qc/0506051 v3 pith:EHW5QRYZ submitted 2005-06-08 gr-qc astro-phhep-phhep-th

Decoherence during Inflation: the generation of classical inhomogeneities

Fernando C. Lombardo , Diana Lopez Nacir This is my paper
classification gr-qc astro-phhep-phhep-th
keywords modessystem-fieldclassicaldecoherenceduringenvironmentequationinflation
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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We show how the quantum to classical transition of the cosmological fluctuations produced during inflation can be described by means of the influence functional and the master equation. We split the inflaton field into the system-field (long-wavelength modes), and the environment, represented by its own short-wavelength modes. We compute the decoherence times for the system-field modes and compare them with the other time scales of the model. We present the renormalized stochastic Langevin equation for an homogeneous system-field and then we analyze the influence of the environment on the power spectrum for some modes in the system.

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Cited by 4 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score.

  1. Quantum Stochastic Inflation

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    Stochastic inflation emerges as GKLS open-system dynamics from tracing entangled modes entering a coarse-grained de Sitter patch, reproducing the classical phase-space Fokker-Planck equation.

  2. Stochastic inflation as an open quantum system II: open effective field theory and stochastic matching

    hep-th 2026-05 unverdicted novelty 7.0

    Constructs open EFT for stochastic inflation with stochastic RG channel, nonlocal Wilson kernels, and derived master equations matched to full theory via method-of-regions.

  3. Stochastic inflation as an open quantum system II: open effective field theory and stochastic matching

    hep-th 2026-05 unverdicted novelty 6.0

    Develops open EFT for stochastic inflation with a distinct stochastic RG channel, derives nonlocal master equations including Fokker-Planck and Klein-Kramers forms, and demonstrates stochastic renormalization with an ...

  4. Gauging Open EFTs from the top down

    hep-th 2025-12 unverdicted novelty 6.0

    Derives gauge-invariant influence functionals for photons and Stueckelberg fields in open U(1) gauge EFTs via BRST on the in-in contour after integrating out matter.