Author: Mandy M. Wygas

0000000000142415

AUTHOR

Mandy M. Wygas

showing 1 related works from this author

Cosmic QCD Epoch at Nonvanishing Lepton Asymmetry

2018

We investigate how a lepton asymmetry impacts the cosmic trajectory in the QCD phase diagram. We study the evolution of chemical potentials during the QCD epoch of the early Universe using susceptibilities from lattice QCD to interpolate between an ideal quark gas and an ideal hadron resonance gas. The lepton asymmetry affects the evolution of all chemical potentials. The standard cosmic trajectory is obtained assuming tiny lepton and baryon asymmetries. For larger lepton asymmetry, the charge chemical potential exceeds the baryon chemical potential before pion annihilation.

QuarkParticle physicsCosmology and Nongalactic Astrophysics (astro-ph.CO)media_common.quotation_subjectHigh Energy Physics::LatticeNuclear TheoryFOS: Physical sciencesGeneral Physics and AstronomyAstrophysics::Cosmology and Extragalactic Astrophysics01 natural sciencesAsymmetryHigh Energy Physics - Phenomenology (hep-ph)PionHigh Energy Physics - Lattice0103 physical sciences010306 general physicsmedia_commonQuantum chromodynamicsPhysics010308 nuclear & particles physicsHigh Energy Physics - Lattice (hep-lat)High Energy Physics::PhenomenologyLattice QCDUniverseBaryonHigh Energy Physics - PhenomenologyHigh Energy Physics::ExperimentLeptonAstrophysics - Cosmology and Nongalactic Astrophysics

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