|Nov19-12, 01:33 PM||#1|
Relativistic at freeze out? Definition of HDM
Okay so in a HDM scenario, I have seen it described that the neutrinos were relativistic at freeze out. (If I could find it I would reference it.)
Is this a contradictory statement?
The condition for relativistic travel is E>>m but just before freezeout, the neutrino has energy equal to the thermal energy of the universe (as it is in thermal equilibrium). Since the particle freezes out when the energy of the universe [itex]\approx[/itex] the mass of the particle, then just before freeze out the particle is not relativistic! Correct?
Anyway, thanks for your time,
|Nov20-12, 07:39 AM||#2|
|Jan7-13, 08:09 AM||#3|
|Similar Threads for: Relativistic at freeze out? Definition of HDM|
|A simple definition to Non-Relativistic Quantum mechanics?||Quantum Physics||4|
|The big freeze||Biology, Chemistry & Other Homework||1|
|Can Anti-freeze freeze?||Biology, Chemistry & Other Homework||2|
|relativistic momentum definition||Special & General Relativity||14|