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Title: Cosmological structure formation and soliton phase transition in fuzzy dark matter with axion self-interactions

Abstract

Herein we investigate cosmological structure formation in fuzzy dark matter (FDM) with the attractive self-interaction (SI) with numerical simulations. Such a SI would arise if the FDM boson were an ultra-light axion, which has a strong CP symmetry-breaking scale (decay constant). Although weak, the attractive SI may be strong enough to counteract the quantum ‘pressure’ and alter structure formation. We find in our simulations that the SI can enhance small-scale structure formation, and soliton cores above a critical mass undergo a phase transition, transforming from dilute to dense solitons.

Authors:
ORCiD logo [1]; ORCiD logo [2]; ORCiD logo [3]; ORCiD logo [4]; ORCiD logo [5]; ORCiD logo [6]; ORCiD logo [7]; ORCiD logo [2]; ORCiD logo [8]; ORCiD logo [9]; ORCiD logo [10]; ORCiD logo [4]; ORCiD logo [11]; ORCiD logo [12]
  1. Princeton Univ., NJ (United States); Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
  2. Univ. of Cambridge (United Kingdom); Kavli Institute for Cosmology, Cambridge (United Kingdom)
  3. Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States). Kavli Institute for Astrophysics and Space Research
  4. Univ. of Texas, Austin, TX (United States)
  5. Universite Paul Sabatier, Toulouse (France)
  6. Rice Univ., Houston, TX (United States)
  7. Durham Univ. (United Kingdom)
  8. Harvard-Smithsonian Center for Astrophysics, Cambridge, MA (United States)
  9. Columbia Univ., New York, NY (United States); Flatiron Institute, New York, NY (United States)
  10. Princeton Univ., NJ (United States)
  11. Yale Center for Astronomy and Astrophysics, New Haven, CT (United States)
  12. University of Iceland, Reykjavik (Iceland)
Publication Date:
Research Org.:
Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
Sponsoring Org.:
USDOE National Nuclear Security Administration (NNSA); National Aeronautics and Space Administration (NASA); National Science Foundation (NSF)
OSTI Identifier:
1972895
Report Number(s):
LLNL-JRNL-844280
Journal ID: ISSN 0035-8711; 1067035; TRN: US2313843
Grant/Contract Number:  
AC52-07NA27344; PF7-180164; NAS8-03060; ATP 19-ATP19-0019; 19-ATP19-0020; 19-ATP19-0167; AST-1814053; AST-1814259; AST-1909831; AST-2007355; AST-2107724; AST-1752913; AST-1910346; AST-2108962; 80NSSC22K0827; NAS5-26555; 80NSSC20K0518; DGE-2108962
Resource Type:
Accepted Manuscript
Journal Name:
Monthly Notices of the Royal Astronomical Society
Additional Journal Information:
Journal Volume: 521; Journal Issue: 2; Journal ID: ISSN 0035-8711
Publisher:
Oxford University Press
Country of Publication:
United States
Language:
English
Subject:
79 ASTRONOMY AND ASTROPHYSICS; cosmology: theory; dark matter; methods: numerical

Citation Formats

Mocz, Philip, Fialkov, Anastasia, Vogelsberger, Mark, Boylan-Kolchin, Michael, Chavanis, Pierre-Henri, Amin, Mustafa A., Bose, Sownak, Dome, Tibor, Hernquist, Lars, Lancaster, Lachlan, Notis, Matthew, Painter, Connor, Robles, Victor H., and Zavala, Jesús. Cosmological structure formation and soliton phase transition in fuzzy dark matter with axion self-interactions. United States: N. p., 2023. Web. doi:10.1093/mnras/stad694.
Mocz, Philip, Fialkov, Anastasia, Vogelsberger, Mark, Boylan-Kolchin, Michael, Chavanis, Pierre-Henri, Amin, Mustafa A., Bose, Sownak, Dome, Tibor, Hernquist, Lars, Lancaster, Lachlan, Notis, Matthew, Painter, Connor, Robles, Victor H., & Zavala, Jesús. Cosmological structure formation and soliton phase transition in fuzzy dark matter with axion self-interactions. United States. https://doi.org/10.1093/mnras/stad694
Mocz, Philip, Fialkov, Anastasia, Vogelsberger, Mark, Boylan-Kolchin, Michael, Chavanis, Pierre-Henri, Amin, Mustafa A., Bose, Sownak, Dome, Tibor, Hernquist, Lars, Lancaster, Lachlan, Notis, Matthew, Painter, Connor, Robles, Victor H., and Zavala, Jesús. Mon . "Cosmological structure formation and soliton phase transition in fuzzy dark matter with axion self-interactions". United States. https://doi.org/10.1093/mnras/stad694. https://www.osti.gov/servlets/purl/1972895.
@article{osti_1972895,
title = {Cosmological structure formation and soliton phase transition in fuzzy dark matter with axion self-interactions},
author = {Mocz, Philip and Fialkov, Anastasia and Vogelsberger, Mark and Boylan-Kolchin, Michael and Chavanis, Pierre-Henri and Amin, Mustafa A. and Bose, Sownak and Dome, Tibor and Hernquist, Lars and Lancaster, Lachlan and Notis, Matthew and Painter, Connor and Robles, Victor H. and Zavala, Jesús},
abstractNote = {Herein we investigate cosmological structure formation in fuzzy dark matter (FDM) with the attractive self-interaction (SI) with numerical simulations. Such a SI would arise if the FDM boson were an ultra-light axion, which has a strong CP symmetry-breaking scale (decay constant). Although weak, the attractive SI may be strong enough to counteract the quantum ‘pressure’ and alter structure formation. We find in our simulations that the SI can enhance small-scale structure formation, and soliton cores above a critical mass undergo a phase transition, transforming from dilute to dense solitons.},
doi = {10.1093/mnras/stad694},
journal = {Monthly Notices of the Royal Astronomical Society},
number = 2,
volume = 521,
place = {United States},
year = {Mon Mar 06 00:00:00 EST 2023},
month = {Mon Mar 06 00:00:00 EST 2023}
}

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