Runaway Relaxion from Finite Density
arXiv:2106.11320 · doi:10.1007/JHEP06(2022)023
Abstract
Finite density effects can destabilize the metastable vacua in relaxion models. Focusing on stars as nucleation seeds, we derive the conditions that lead to the formation and runaway of a relaxion bubble of a lower energy minimum than in vacuum. The resulting late-time phase transition in the universe allows us to set new constraints on the parameter space of relaxion models. We also find that similar instabilities can be triggered by the large electromagnetic fields around rotating neutron stars.
arXiv comment30 pages, 5 figures and several appendices
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Cited by in corpus (11)
- Constraining Light QCD Axions with Isolated Neutron Star Cooling
- Cosmological Relaxation through the Dark Axion Portal
- Relaxion Dark Matter from Stochastic Misalignment
- From Supernovae to Neutron Stars: A Systematic Approach to Axion Production at Finite Density
- Probing Dark Sectors with Neutron Stars
- Pi in the Sky: Neutron Stars with Exceptionally Light QCD Axions
- The Stochastic Relaxion
- Inverse bubbles from broken supersymmetry
- Hierarchies from Landscape Probability Gradients and Critical Boundaries
- Stacking the Deck: Gambling on a Light QCD Axion
- Bubble Nucleation from Boson Star Collapse