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Constraining Axion and ALP Dark Matter from Misalignment during Reheating

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arxiv 2308.15322 v2 pith:F55EDBYT submitted 2023-08-29 hep-ph astro-ph.CO

Yong Xu This is my paper
classification hep-phastro-ph.CO
keywords reheatingaxionexperimentsconstrainingdarkduringinflatonmatter
verification ladder T0 review T1 audit T2 compute T3 formal
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abstract

We explore the phenomenology of QCD axion and axion-like particle (ALP) dark matter production via misalignment during inflationary reheating. We investigate scenarios involving inflaton oscillating in a generic potential $\sim \phi^n$, considering inflaton decay and annihilation for reheating. For low reheating temperatures, the parameter space leading to the correct relic abundance can be enlarged beyond the standard case. Depending on the type of inflaton-matter couplings and the value of $n$, we find that certain parts of the extended parameter space are already constrained by ADMX, CAPP, and MUSE experiments. Future Haloscope experiments are expected to impose stringent constraints. We highlight the potential to utilize axion experiments in constraining the dynamics of reheating.

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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. micrOMEGAs 7: Beyond standard cosmology

    hep-ph 2026-06 unverdicted novelty 5.0 of 10

    The micrOMEGAs dark-matter package now solves Boltzmann equations with user-defined expansion and entropy histories, adds sub-GeV hadronic annihilation, and updates CMB, dwarf-galaxy, LZ, and CMS constraints.

  2. Sterile Neutrino Dark Matter as a Probe of Inflationary Reheating

    hep-ph 2026-01 conditional novelty 5.0 of 10

    Inflaton decays during reheating can produce all of the observed sterile-neutrino dark matter with a branching ratio below 10^-4, evading X-ray bounds and making a future X-ray line a probe of the inflaton mass and re...

  3. Impact of First-order Electroweak Phase Transition on QCD Axion

    hep-ph 2025-07 conditional novelty 5.0 of 10

    A temporary axion mass spike during a first-order electroweak phase transition can make the QCD axion dark matter over a wide range of decay constants without a tuned initial angle.

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