The neutrino in the Friedmann universe - Non-zero rest-mass effects

Details The neutrino in the Friedmann universe - Non-zero rest-mass effects The neutrino in the Friedmann universe - Non-zero rest-mass effects

Jul 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984ap%26ss.102..131b&link_type=abstract

Astrophysics and Space Science (ISSN 0004-640X), vol. 102, no. 1, July 1984, p. 131-154.

Astronomy and Astrophysics

Astrophysics

2

Big Bang Cosmology, Elementary Particle Interactions, Neutrinos, Particle Mass, Particle Motion, Particle Trajectories, Photons, Relativistic Particles, Relic Radiation, Space-Time Functions, Supernovae

Scientific paper

The authors have considered the problem of the propagation of non-zero rest-mass neutrinos in the Friedmann dust universes of three types: open, flat, and closed, as well as in the radiation-dominated epoch of the hot universe. The total Lagrangian path of the particle has been calculated, and this is shown to be finite for all three universes - contrary to the total path of the photon, which is infinite in the open and flat universes. The particle horizon is found as a function of the relativistic parameter at the emission moment and at the moment of observation. The extreme relativistic and nonrelativistic particle motion and its difference from the photon motion have been investigated.

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