hadron era | is followed by lepton era | |
has density ρ = 1093 g cm-3 | |
has duration 10-5 s | |
has synonym hadron barrier | |
is preceded by Planck era | |
has start time 10-43 s after Big Bang | |
has definition The Big Bang era when the Universe was matter-dominated, containing many hadrons in equilibrium with the radiation field and when kT ≈ mπ. The hadron era ended when the characteristic photon energy fell below the rest mass of a pion or π-meson (270 electron masses), and very few hadrons remained (about one hadron for every 108 photons). | |
has definition The Big Bang era during which quantum and general-relativistic effects are expected to modify each other in an unknown way. | |
is a kind of Big Bang era | |
Big Bang era | has temperature | |
event | has time of occurrence | |