Seminars and Journal Clubs

Fei Gao and Isabel Oldengott, "First-order cosmic QCD transition induced by large lepton asymmetries"

by Fei Gao (Heidelberg University) , Isabel Mira Oldengott (CP3)

Europe/Brussels
E/3rd floor-E.349 - Seminar room (E.349) (Marc de Hemptinne (chemin du Cyclotron, 2, Louvain-la-Neuve))

E/3rd floor-E.349 - Seminar room (E.349)

Marc de Hemptinne (chemin du Cyclotron, 2, Louvain-la-Neuve)

30
Description

The lepton  avour asymmetries of the Universe are observationally almost unconstrained before
the onset of neutrino oscillations. We calculate the cosmic trajectory during the cosmic QCD epoch
in presence of large lepton  avour asymmetries. By including QCD thermodynamic quantities
derived from functional QCD methods into our calculation our work reveals for the rst time the
possibility of a rst-order cosmic QCD transition. We specify the required values of the lepton
 avour asymmetries for which a rst-order transition occurs for a number of di erent benchmark
scenarios.