# Free Streaming Length of Axion-Like Particle After Oscillon/ I-ball Decays

@inproceedings{Imagawa2021FreeSL, title={Free Streaming Length of Axion-Like Particle After Oscillon/ I-ball Decays}, author={Kaname Imagawa and Masahiro Kawasaki and Kai Murai and Hiromasa Nakatsuka and Eisuke Sonomoto}, year={2021} }

Axion-like particles (ALPs) are pseudoscalar bosons predicted by string theory. The ALPs have a shallower potential than a quadratic one, which induces the instability and can form the solitonic object called oscillon/I-ball. Although the lifetime of oscillons can be very long for some type of potentials, they finally decay until the present. We perform the numerical lattice simulations to investigate the decay process of oscillons and evaluate the averaged momentum of ALPs emitted from the…

## One Citation

Anisotropies in Cosmological 21 cm Background by Oscillons/I-balls of Ultra-light Axion-like Particle

- Physics
- 2021

Ultra-light axion-like particle (ULAP) with mass m ∼ 10−22 eV has recently been attracting attention as a possible solution to the small-scale crisis. ULAP forms quasistable objects called…

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