Primordial Magnetogenesis and Gravitational Waves from ALP-assisted Phase Transition

arXiv:2604.20768 · hep-ph, astro-ph.CO, hep-th · Submitted 2026-04-22 · Read on arXiv

hep-ph, astro-ph.CO, hep-th

Submitted: 2026-04-22

Updated: 2026-08-27

Comments: 42 pages, 7 figures. Minor revision and references added. Version accepted for publication in JCAP

Project page: https://cajohare.github.io/AxionLimits

License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/

Terminology

• Coherence Length — 19× in this paper · explained in 2 episodes
• Symmetry Breaking — 18× in this paper · explained in 3 episodes
• Phase Transitions — 17× in this paper · explained in 2 episodes
• Standard Model — 9× in this paper
• Benchmark — 8× in this paper · explained in 2 episodes
• Primordial Magnetic Fields — 7× in this paper · explained in 2 episodes
• Reheating — 7× in this paper · explained in 2 episodes
• Core — 6× in this paper · explained in 2 episodes
• Hubble Tension — 5× in this paper · explained in 9 episodes
• Decoupling — 4× in this paper · explained in 2 episodes
• Pulsar Timing Array — 3× in this paper
• Cosmic Explorer — 2× in this paper
• Einstein Telescope — 2× in this paper
• Stochastic Gravitational Wave Background (SGWB) — 2× in this paper · explained in 3 episodes
• Abundance — 1× in this paper · explained in 1 episode
• Accuracy — 1× in this paper · explained in 1 episode
• Adam — 1× in this paper · explained in 2 episodes
• Boltzmann Equation — 1× in this paper · explained in 2 episodes
• Consistency — 1× in this paper · explained in 3 episodes
• Deep Underground Neutrino Experiment — 1× in this paper
• Domain Walls — 1× in this paper · explained in 2 episodes
• Metastability — 1× in this paper · explained in 2 episodes
• Quintessence — 1× in this paper · explained in 2 episodes
• Unified Framework — 1× in this paper · explained in 5 episodes

Sources

• Upper Limits on the Stochastic Gravitational-Wave Background from Advanced LIGO's First Observing Run
• Search for the isotropic stochastic background using data from Advanced LIGO's second observing run
• Upper Limits on the Isotropic Gravitational-Wave Background from Advanced LIGO's and Advanced Virgo's Third Observing Run
• The NANOGrav 15-year Data Set: Evidence for a Gravitational-Wave Background
• The second data release from the European Pulsar Timing Array III. Search for gravitational wave signals
• Search for an isotropic gravitational-wave background with the Parkes Pulsar Timing Array
• Searching for the nano-Hertz stochastic gravitational wave background with the Chinese Pulsar Timing Array Data Release I
• Compact binary coalescences: gravitational-wave astronomy with ground-based detectors
• The NANOGrav 15-year Data Set: Search for Signals from New Physics
• The NANOGrav 15-year Data Set: Constraints on Supermassive Black Hole Binaries from the Gravitational Wave Background
• The second data release from the European Pulsar Timing Array: IV. Implications for massive black holes, dark matter and the early Universe
• TianQin: a space-borne gravitational wave detector
• Taiji Program: Gravitational-Wave Sources
• Fundamental Physics with the Square Kilometre Array
• Cosmic Explorer: The U.S. Contribution to Gravitational-Wave Astronomy beyond LIGO
• AEDGE: Atomic Experiment for Dark Matter and Gravity Exploration in Space
• Unveiling the Gravitational Universe at \mu-Hz Frequencies
• AION: An Atom Interferometer Observatory and Network
• Current status of space gravitational wave antenna DECIGO and B-DECIGO
• Matter-wave Atomic Gradiometer Interferometric Sensor (MAGIS-100)

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• Higgsino Dark Matter Interpretation of the LUX-ZEPLIN 248 keV Nuclear-Recoil Event
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• Probing Memory-Burdened Primordial Black Holes with High-Energy Neutrinos
• Enhanced Dark Matter Quantum Sensing via Phase-Space Geometric Interferometry
• Axions as Dark Matter, Dark Energy, and Dark Radiation