The cosmological QCD phase transition revisited

• Verfasst von: Boeckel, Moritz Tillmann [VerfasserIn]
• Verfasst von: Schettler, Simon [VerfasserIn]
• Verfasst von: Schaffner-Bielich, Jürgen [VerfasserIn]
• Titel: The cosmological QCD phase transition revisited
• Verf.angabe: Tillmann Boeckel, Simon Schettler, Jürgen Schaffner-Bielich
• E-Jahr: 2011
• Jahr: 14 January 2011
• Umfang: 5 S.
• Fussnoten: Gesehen am 31.03.2022
• Titel Quelle: Enthalten in: Progress in particle and nuclear physics
• Ort Quelle: Oxford [u.a.] : Pergamon Press, 1978
• Jahr Quelle: 2011
• Band/Heft Quelle: 66(2011), 2 vom: Apr., Seite 266-270
• ISSN Quelle: 0146-6410
• DOI: doi:10.1016/j.ppnp.2011.01.017
• Datenträger: Online-Ressource
• Sprache: eng
• Sach-SW: Early universe
• Sach-SW: Gravitational waves
• Sach-SW: Inflation
• Sach-SW: Quark-gluon plasma
• K10plus-PPN: 1797143646

Abstract

The QCD phase diagram might exhibit a first order phase transition for large baryochemical potentials. We explore the cosmological implications of such a QCD phase transition in the early universe. We propose that the large baryon-asymmetry is diluted by a little inflation where the universe is trapped in a false vacuum state of QCD. The little inflation is stopped by bubble nucleation which leads to primordial production of the seeds of extragalactic magnetic fields, primordial black holes and gravitational waves. In addition the power spectrum of cold dark matter can be affected up to mass scales of 109M⊙. The imprints of the cosmological QCD phase transition on the gravitational wave background can be explored with the future gravitational wave detectors LISA and BBO and with pulsar timing.