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A unique gravitational wave signal from phase transition during inflation

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arxiv 2009.12381 v2 pith:UNMBEED3 submitted 2020-09-25 astro-ph.CO hep-ph

A unique gravitational wave signal from phase transition during inflation

classification astro-ph.CO hep-ph
keywords inflationphasewaveduringgravitationalspectrumsignaltransition
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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We study the properties of the gravitational wave (GW) signals produced by first order phase transitions during the inflation era. We show that the power spectrum of the GW oscillates with its wave number. This signal can be observed directly by future terrestrial and spatial gravitational wave detectors and through the B-mode spectrum in CMB. This oscillatory feature of GW is generic for any approximately instantaneous sources occurring during inflation and is distinct from the GW from phase transitions after the inflation. The details of the GW spectrum contain information about the scale of the phase transition and the later evolution of the universe.

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Cited by 2 Pith papers

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

  1. Phenomenology of Inflaton-Driven Early QCD Confinement and Solution to Axion Isocurvature Problem

    astro-ph.CO 2026-06 unverdicted novelty 6.0

    Inflaton-gluon coupling induces early QCD confinement to suppress axion isocurvature perturbations and enable axion dark matter production in alpha-attractor inflation models.

  2. Dark Matter Production from Bubble Collisions during a First-Order Phase Transition at the End of Inflation

    hep-ph 2026-05 unverdicted novelty 5.0

    Bubble collisions during a first-order phase transition at the end of inflation can generate the observed dark matter abundance in a restricted region of parameter space via direct production and spectator decays.