<< To summarize, motivated by the ~10 M* (mass similar to that of the sun) black holes observed by LIGO/Virgo in binary mergers, (AA) entertained the possibility that the quark-gluon confinement phase transition was first order due to the effect of 6 light quarks. The larger number of light quarks, compared to the standard case, pushes the transition temperature below ∼100 MeV. The first order nature of the transition significantly improves the likelihood of forming primordial black holes and its lower temperature suggests that these black holes can potentially be as heavy as ∼10 M*, compared to ∼M* for the standard QCD transition. >>
Hooman Davoudiasl. LIGO/Virgo Black Holes from a First Order Quark Confinement Phase Transition. Phys. Rev. Lett. 123, 101102. Sep 6, 2019. https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.123.101102
Ingrid Fadelli. Theory proposes that LIGO/Virgo black holes originate from a first order phase transition. Sep 23, 2019. https://m.phys.org/news/2019-09-theory-ligovirgo-black-holes-phase.html
QCD = quantum chromodynamic
https://en.m.wikipedia.org/wiki/Standard_Model
Nessun commento:
Posta un commento
Nota. Solo i membri di questo blog possono postare un commento.