QCD Axion Star Collapse with the Chiral Potential

Abstract

In a previous work, we analyzed collapsing axion stars using the low-energy instanton potential, showing that the total energy is always bounded and that collapsing axion stars do not form black holes. In this paper, we provide a proof that the conclusions are unchanged when using instead the more general chiral potential for QCD axions.

arXiv comment11 pages

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• Global view of QCD axion stars
• On Approximation Methods in the Study of Boson Stars
• Jeans mass-radius relation of self-gravitating Bose-Einstein condensates and typical parameters of the dark matter particle
• QCD $\theta$-vacuum energy and axion properties
• Decay of Ultralight Axion Condensates
• Expansion in Higher Harmonics of Boson Stars using a Generalized Ruffini-Bonazzola Approach, Part 1: Bound States
• Effect of the chiral phase transition on axion mass and self-coupling
• Stability of Condensed Fuzzy Dark Matter Halos
• Quantum tunneling rate of dilute axion stars close to the maximum mass
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• Global View of Axion Stars with (Nearly) Planck-Scale Decay Constants
• Exploring the axion potential and axion walls in dense quark matter
• Bosenovae with Quadratically-Coupled Scalars in Quantum Sensing Experiments
• Topological susceptibility and axion potential in two-flavor superconductive quark matter