Download E-books The B-L Phase Transition: Implications for Cosmology and Neutrinos (Springer Theses) PDF

By Kai Schmitz

A number of of the very foundations of the cosmological commonplace version — the baryon asymmetry of the universe, darkish topic, and the foundation of the recent massive bang itself — nonetheless demand a proof from the point of view of primary physics. This work advocates one fascinating probability for a constant cosmology that fills within the theoretical gaps whereas being totally in response to the observational info. At very excessive energies, the universe could have been in a fake vacuum kingdom that preserved B-L, the adaptation among the baryon quantity B and the lepton quantity L as a neighborhood symmetry. during this country, the universe skilled a degree of hybrid inflation that in basic terms ended while the fake vacuum grew to become volatile and decayed, during a waterfall transition, right into a part with spontaneously damaged B-L symmetry. This B-L section Transition used to be followed by means of tachyonic preheating that transferred virtually the full power of the fake vacuum right into a fuel of B-L Higgs bosons, which in flip decayed into heavy Majorana neutrinos. ultimately, those neutrinos decayed into massless radiation, thereby generating the entropy of the recent vast bang, producing the baryon asymmetry of the universe through the leptogenesis mechanism and atmosphere the level for the construction of darkish topic. subsequent to various conceptual novelties and phenomenological predictions, the most success of the thesis is consequently the interesting concept that the best function within the first act of our universe may have really been performed via neutrinos.

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