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8 - Quark Stars

Published online by Cambridge University Press:  17 August 2020

Jürgen Schaffner-Bielich
Affiliation:
Goethe-Universität Frankfurt Am Main
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Summary

The theory of quantum chromodynamics (QCD) is introduced. Features of QCD as the nontrivial vacuum due to quark and gluon condensate and asymptotic freedom at high-energy scales are discussed. The concept of perturbative QCD and the running of the coupling constant is established. The equation of state of QCD at high temperatures from lattice QCD is reviewed and confronted with perturbative QCD calculations. The QCD equation of state at high baryon density is discussed. Properties of selfbound stars are developed where the equation of state has a nonvanishing pressure at a nonvanishing energy density. The mass–radius relation of pure quark stars is examined and compared to the limits from causality.

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Compact Star Physics , pp. 209 - 236
Publisher: Cambridge University Press
Print publication year: 2020

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  • Quark Stars
  • Jürgen Schaffner-Bielich, Goethe-Universität Frankfurt Am Main
  • Book: Compact Star Physics
  • Online publication: 17 August 2020
  • Chapter DOI: https://doi.org/10.1017/9781316848357.009
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  • Quark Stars
  • Jürgen Schaffner-Bielich, Goethe-Universität Frankfurt Am Main
  • Book: Compact Star Physics
  • Online publication: 17 August 2020
  • Chapter DOI: https://doi.org/10.1017/9781316848357.009
Available formats
×

Save book to Google Drive

To save content items to your account, please confirm that you agree to abide by our usage policies. If this is the first time you use this feature, you will be asked to authorise Cambridge Core to connect with your account. Find out more about saving content to Google Drive.

  • Quark Stars
  • Jürgen Schaffner-Bielich, Goethe-Universität Frankfurt Am Main
  • Book: Compact Star Physics
  • Online publication: 17 August 2020
  • Chapter DOI: https://doi.org/10.1017/9781316848357.009
Available formats
×