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Chemical-Potential-Assisted Particle Production in FRW Spacetimes

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arxiv 2104.08772 v2 pith:O7HBNXKD submitted 2021-04-18 hep-th astro-ph.COgr-qchep-ph

Chon Man Sou , Xi Tong , Yi Wang This is my paper
classification hep-thastro-ph.COgr-qchep-ph
keywords productionparticlemethodsmoothedspacetimesspin-1stokes-lineuniformly
verification ladder T0 review T1 audit T2 compute T3 formal
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We analyze gravitational particle production assisted by chemical potential. By utilizing the uniformly smoothed Stokes-line method and Borel summation, we gain insight into the fine-grained history of enhanced particle production. Analytic/semi-analytic formulae describing the production amount, time and width are obtained for both spin-1 and spin-1/2 particles in various FRW spacetimes. Our work also serves as a concrete demonstration of the uniformly smoothed Stokes-line method applied to cosmology.

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Cited by 4 Pith papers

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

  1. New exact bispectrum shapes in multifield inflation

    hep-th 2026-07 conditional novelty 8.0 of 10

    Exact analytic bispectrum shapes are derived for multifield inflation at arbitrary quadratic mixing strength, showing a strong-mixing collider signal with frequency μ_eff = sqrt(m²/H² + λ² − 9/4).

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    astro-ph.CO 2026-07 accept novelty 7.0 of 10

    A joint Bayesian fit of the multi-field inflationary Lagrangian to Planck bispectrum data finds no cosmological collider signal (max Δχ²=5.3) and shows weak-mixing template searches are invalid except at the smallest masses.

  3. The Exact and Approximate Tales of Boost-Breaking Cosmological Correlators

    hep-th 2025-06 conditional novelty 7.0 of 10

    The tree-level boost-breaking cosmological collider seed correlator is computed exactly for general sound speed and chemical potential, and saddle-point methods turn it into practical elementary-function templates.

  4. Cosmological Collider Signatures from Right-Handed Neutrino Loop

    hep-ph 2026-05 unverdicted novelty 6.5 of 10

    Right-handed neutrino loops in inflation with seesaw mechanism generate enhanced cosmological collider signatures via a chemical potential from a dimension-5 operator, softening Boltzmann suppression and amplifying os...

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