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Title: Axion structure formation – II. The wrath of collapse

Abstract

ABSTRACT The first paper in this series showed that quantum chromodynamic axion dark matter, as a highly correlated Bose fluid, contains extra-classical physics on cosmological scales. The source of the derived extra-classical physics is exchange–correlation interactions induced by the constraints of symmetric particle exchange and interaxion correlations from self-gravitation. The paper also showed that the impact of extra-classical physics on early structure formation is marginal, as the exchange–correlation interaction is inherently non-linear. This paper continues the study of axion structure formation into the non-linear regime, considering the case of full collapse and virialization. The N-body method is chosen to study the collapse, and its algorithms are derived for a condensed Bose fluid. Simulations of isolated gravitational collapse are performed for both Bose and cold dark matter fluids using a prototype N-body code. Unique Bose structures are found to survive even the most violent collapses. Bose post-collapse features include dynamical changes to global structures, creation of new broad sub-structures, violations of classical binding energy conditions, and new fine structures. Effective models of the novel structures are constructed and possibilities for their observation are discussed.

Authors:
 [1];  [2];  [3]
  1. Institut für Astrophysik, Georg-August Universität Göttingen, Göttingen, D-Deutschland 37707, Germany, Department of Physics, University of Washington, Seattle, WA 98195-1560, USA
  2. Department of Astronomy, University of Washington, Seattle, WA 98195-1580, USA
  3. Department of Physics, University of Washington, Seattle, WA 98195-1560, USA
Publication Date:
Sponsoring Org.:
USDOE
OSTI Identifier:
1607601
Resource Type:
Published Article
Journal Name:
Monthly Notices of the Royal Astronomical Society
Additional Journal Information:
Journal Name: Monthly Notices of the Royal Astronomical Society Journal Volume: 493 Journal Issue: 4; Journal ID: ISSN 0035-8711
Publisher:
Oxford University Press
Country of Publication:
United Kingdom
Language:
English

Citation Formats

Lentz, Erik W., Quinn, Thomas R., and Rosenberg, Leslie J. Axion structure formation – II. The wrath of collapse. United Kingdom: N. p., 2020. Web. doi:10.1093/mnras/staa557.
Lentz, Erik W., Quinn, Thomas R., & Rosenberg, Leslie J. Axion structure formation – II. The wrath of collapse. United Kingdom. doi:https://doi.org/10.1093/mnras/staa557
Lentz, Erik W., Quinn, Thomas R., and Rosenberg, Leslie J. Mon . "Axion structure formation – II. The wrath of collapse". United Kingdom. doi:https://doi.org/10.1093/mnras/staa557.
@article{osti_1607601,
title = {Axion structure formation – II. The wrath of collapse},
author = {Lentz, Erik W. and Quinn, Thomas R. and Rosenberg, Leslie J.},
abstractNote = {ABSTRACT The first paper in this series showed that quantum chromodynamic axion dark matter, as a highly correlated Bose fluid, contains extra-classical physics on cosmological scales. The source of the derived extra-classical physics is exchange–correlation interactions induced by the constraints of symmetric particle exchange and interaxion correlations from self-gravitation. The paper also showed that the impact of extra-classical physics on early structure formation is marginal, as the exchange–correlation interaction is inherently non-linear. This paper continues the study of axion structure formation into the non-linear regime, considering the case of full collapse and virialization. The N-body method is chosen to study the collapse, and its algorithms are derived for a condensed Bose fluid. Simulations of isolated gravitational collapse are performed for both Bose and cold dark matter fluids using a prototype N-body code. Unique Bose structures are found to survive even the most violent collapses. Bose post-collapse features include dynamical changes to global structures, creation of new broad sub-structures, violations of classical binding energy conditions, and new fine structures. Effective models of the novel structures are constructed and possibilities for their observation are discussed.},
doi = {10.1093/mnras/staa557},
journal = {Monthly Notices of the Royal Astronomical Society},
number = 4,
volume = 493,
place = {United Kingdom},
year = {2020},
month = {3}
}

Journal Article:
Free Publicly Available Full Text
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DOI: https://doi.org/10.1093/mnras/staa557

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