47 citations · 145 across the 19 of their papers we have counts for
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Weinberg Angle, Neutron Abundance in BBN, and Lifetime
Cheng Tao Yang, Johann Rafelski
We present state of the art kinetic theory determination of the neutron abundance available for the Big-Bang nucleosynthesis (BBN). Our work is motivated by the study of the neutro…
Elementary Particles and Plasma in the First Hour of the Early Universe
Cheng Tao Yang
This dissertation aims to deepen the understanding of the primordial composition of the Universe in the temperature range 300 MeV>T>0.02 MeV. I exploit known properties of elementa…
Dynamic fermion flavor mixing through transition dipole moments
Johann Rafelski, Andrew Steinmetz, Cheng Tao Yang
We show that Majorana neutrino flavor mixing can be driven by transition dipole moments in the presence of external electromagnetic fields. We demonstrate the sensitivity of the ro…
Matter-antimatter origin of cosmic magnetism
Andrew Steinmetz, Cheng Tao Yang, Johann Rafelski
We explore the hypothesis that the abundant presence of relativistic antimatter (positrons) in the primordial universe is the source of the intergalactic magnetic fields we observe…
Cosmological Strangeness Abundance
Cheng Tao Yang, Johann Rafelski
We investigate the strange particle composition of the early Universe in the hadron epoch \,MeV. We study strangeness yield in thermal and chemical equil…
The muon abundance in the primordial Universe
Jan Rafelski, Cheng Tao Yang
Muon abundance is required for the understanding of several fundamental questions regarding properties of the primordial Universe. In this paper we evaluate the production and deca…
Reactions Governing Strangeness Abundance in Primordial Universe
Johann Rafelski, Cheng Tao Yang
Strangness production processes can balance natural strangeness decay in the early hadronic Universe. Comparing to the characteristic Hubble time , the reaction rates for $μ^\…
Possibility of bottom-catalyzed matter genesis near to primordial QGP hadronization
Cheng Tao Yang, Johann Rafelski
We study bottom flavor abundance in the early Universe near to a temperature , the condition for hadronization of deconfined quark-gluon plasma…
Lepton Number and Expansion of the Universe
Cheng Tao Yang, Jeremiah Birrell, Johann Rafelski
We show that the non-integer effective number of neutrinos can be understood as an effect of lepton asymmetry in the early Universe carried by the Dirac ne…
Strong fields and neutral particle magnetic moment dynamics
Martin Formanek, Stefan Evans, Johann Rafelski +2
Interaction of magnetic moment of point particles with external electromagnetic fields experiences unresolved theoretical and experimental discrepancies. In this work we point out…