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Preheating in an Expanding Universe: Analytic Results for the Massless Case

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arxiv hep-ph/9702244 v2 pith:SDOANUKQ submitted 1997-02-04 hep-ph astro-phgr-qc

David I. Kaiser This is my paper · ORCID
classification hep-phastro-phgr-qc
keywords preheatinginflationanalyticcasechaoticinflatonmasslessmodels
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abstract

Analytic results are presented for preheating in both flat and open models of chaotic inflation, for the case of massless inflaton decay into further inflaton quanta. It is demonstrated that preheating in both these cases closely resembles that in Minkowski spacetime. Furthermore, quantitative differences between preheating in spatially-flat and open models of inflation remain of order $10^{-2}$ for the chaotic inflation initial conditions considered here.

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Forward citations

Cited by 6 Pith papers

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

  1. CosmoLattice 2.0

    astro-ph.CO 2026-07 conditional novelty 6.0 of 10

    CosmoLattice v2.0 extends lattice cosmology simulations with non-minimal scalars, ALP–gauge couplings, defect networks, low-storage RK integrators, optimized GWs, and O(10) GPU speedups.

  2. Fermion (non)reheating with a quartic inflaton potential

    hep-ph 2025-12 conditional novelty 6.0 of 10

    In the quartic T-model, inflaton decay to fermions is strongly suppressed by Pauli blocking and parametric resonance, so fermion-only reheating is effectively impossible unless y ≳ 0.2 or a scalar channel is added.

  3. Ephemeral Oscillons in Scalar-Tensor Theories: The Higgs-like case

    hep-ph 2025-01 conditional novelty 6.0 of 10

    In a Higgs-like Einstein-Cartan inflation model, oscillons formed after inflation are short-lived and their decay drives radiation domination within about four e-folds.

  4. Potential Surge Preheating: enhanced resonance from potential features

    astro-ph.CO 2024-12 conditional novelty 6.0 of 10

    Localized Gaussian features added to the quadratic inflaton potential near its minimum enhance preheating and can drive the equation of state to a radiation-like value, leaving distinctive gravitational wave and Neff ...

  5. The art of simulating the early Universe. Part III: Scalar-Gauge-Fluid Dynamics

    astro-ph.CO 2026-07 accept novelty 5.0 of 10

    Detailed continuum-to-lattice schemes are given for perfect/imperfect fluids alone or coupled to scalars/gauges in FLRW, enabling self-consistent CosmoLattice simulations of early-Universe plasma dynamics and GWs.

  6. Equation of state during (p)reheating with trilinear interactions

    astro-ph.CO 2025-07 unverdicted novelty 5.0 of 10

    Lattice simulations show that the post-inflationary equation of state with trilinear interactions returns to zero after an initial deviation, substantially lowering stochastic gravitational wave amplitudes relative to...

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