Corpus ID: 202888487

The Large-Misalignment Mechanism for the Formation of Compact Axion Structures: Signatures from the QCD Axion to Fuzzy Dark Matter

@inproceedings{Arvanitaki2019TheLM,
  title={The Large-Misalignment Mechanism for the Formation of Compact Axion Structures: Signatures from the QCD Axion to Fuzzy Dark Matter},
  author={Asimina Arvanitaki and Savas Dimopoulos and Marios Andreas Galanis and Luis Lehner and Jedidiah O. Thompson and Ken Van Tilburg},
  year={2019}
}
  • Asimina Arvanitaki, Savas Dimopoulos, +3 authors Ken Van Tilburg
  • Published 2019
  • Physics
  • Axions are some of the best motivated particles beyond the Standard Model. We show how the attractive self-interactions of dark matter (DM) axions over a broad range of masses, from $10^{-22}$ eV to $10^7$ GeV, can lead to nongravitational growth of density fluctuations and the formation of bound objects. This structure formation enhancement is driven by parametric resonance when the initial field misalignment is large, and it affects axion density perturbations on length scales of order the… CONTINUE READING

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