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Gravitational Wave Symphony from Oscillating Spectator Scalar Fields

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arxiv 2310.13060 v2 pith:TNCRWRIE submitted 2023-10-19 hep-ph astro-ph.COgr-qc

Yanou Cui , Pankaj Saha , Evangelos I. Sfakianakis This is my paper
classification hep-phastro-ph.COgr-qc
keywords gravitationalwavebackgrounddarkdetectablefieldsmodelsoscillating
verification ladder T0 review T1 audit T2 compute T3 formal
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We investigate a generic source of stochastic gravitational wave background due to the parametric resonance of oscillating scalar fields in the early Universe. By systematically analyzing benchmark models through lattice simulations and considering a wide range of parameters, we demonstrate that such a scenario can lead to detectable signals in gravitational wave detectors over a broad frequency range and potentially address the recent findings by pulsar timing array experiments. Furthermore, these models naturally yield ultralight dark matter candidates or dark radiation detectable by cosmic microwave background observatories.

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Cited by 3 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. 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.

  3. Gravitational Waves from Spectator Scalar Fields

    hep-ph 2025-06 conditional novelty 4.0 of 10

    Heavy spectator scalar fields with masses near the inflationary Hubble scale generate a gravitational wave background observable across pulsar timing arrays, LISA, and ground-based interferometers, with constraints re...

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