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Exactly solvable stochastic spectator

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arxiv 2409.16272 v1 pith:B5JKS7R2 submitted 2024-09-24 astro-ph.CO gr-qchep-thmath-phmath.MPnlin.SI

classification astro-ph.COgr-qchep-thmath-phmath.MPnlin.SI
keywords solutionsstochasticcorrespondenceexactlyinflationsolvableallowsanalytical
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The stochastic formalism of inflation allows us to describe the scalar-field dynamics in a non-perturbative way. The correspondence between the diffusion and Schr\"{o}dinger equations makes it possible to exhaustively construct analytical solutions in stochastic inflation. Those exact statistical quantities such as distribution and correlation functions have one-to-one correspondence to the exactly solvable solutions in non-relativistic quantum mechanics in terms of classical orthogonal polynomials. A class of such solutions is presented by means of isospectral Hamiltonians with an underlying symmetry called shape invariance.

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Cited by 2 Pith papers

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

  1. Deviations from Gaussian White Noise in Stochastic Inflation

    gr-qc 2025-12 conditional novelty 6.0 of 10

    Relaxing the sharp cutoff or the Bunch-Davies initial state in stochastic inflation makes the noise colored, and relaxing the initial state also makes it non-Gaussian.

  2. Curvaton distribution from stochastic inflation

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

    Closed-form probability distributions for the curvature perturbation are derived for four exactly solvable curvaton potentials, and the mass-decay-rate parameter space is split into regions by the probability of produ...

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