1997/08/05 by P. Di Bari, Di Bari, P.
Physics and Astronomy · #Astrophysics (astro-ph) #FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph) #astro-ph #hep-ph
paper · pdf · doi:10.48550/arxiv.hep-ph/9708246
9 pages, Latex, 3 ps-figures included. Talk presented in the Nato School Sesion "Generation of Cosmological Large-Scale Structure" (Erice, November 1996)
arxiv created 1997/08/05 · arxiv updated 2009/11/30
We expose briefly the role of entropy in the early universe and in particular the importance of searching for new mechanisms of entropy production. We describe a mechanism that shows how entropy is produced during early annihilations and under which conditions the production is not negligible. A MeV tau neutrino provides an interesting application.