Mixing electromagnetic radiation with dark radiation between BBN and recombination dilutes the baryon-to-entropy ratio, tightening the allowed total extra radiation to at most ~25% more than dark-radiation-only scenarios.
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In a B-L conserving SM extension with U(1)_x dark sector, CP-violating Yukawas generate opposite lepton asymmetries in visible and hidden sectors that sphalerons convert to baryon asymmetry, with gauge-independent bubble nucleation yielding stochastic GW spectra valid in supercooled regimes and a参数s
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Constraints on the Injection of Radiation in the Early Universe
Mixing electromagnetic radiation with dark radiation between BBN and recombination dilutes the baryon-to-entropy ratio, tightening the allowed total extra radiation to at most ~25% more than dark-radiation-only scenarios.
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Gauge-independent Gravitational Waves from Cogenesis in a $B-L$ Conserving Universe
In a B-L conserving SM extension with U(1)_x dark sector, CP-violating Yukawas generate opposite lepton asymmetries in visible and hidden sectors that sphalerons convert to baryon asymmetry, with gauge-independent bubble nucleation yielding stochastic GW spectra valid in supercooled regimes and a参数s