Get The B−L Phase Transition: Implications for Cosmology and PDF

By Kai Schmitz

numerous of the very foundations of the cosmological ordinary version — the baryon asymmetry of the universe, darkish subject, and the foundation of the new gigantic bang itself — nonetheless demand a proof from the point of view of basic physics. This work advocates one exciting threat for a constant cosmology that fills within the theoretical gaps whereas being totally based on the observational info. At very excessive energies, the universe could have been in a fake vacuum kingdom that preserved B-L, the variation among the baryon quantity B and the lepton quantity L as an area symmetry. during this country, the universe skilled a level of hybrid inflation that simply ended while the fake vacuum grew to become risky and decayed, during a waterfall transition, right into a part with spontaneously damaged B-L symmetry. This B-L part Transition was once followed through tachyonic preheating that transferred virtually the complete strength of the fake vacuum right into a gasoline 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 monstrous bang, producing the baryon asymmetry of the universe through the leptogenesis mechanism and atmosphere the degree for the creation of darkish subject. subsequent to a number of conceptual novelties and phenomenological predictions, the most fulfillment of the thesis is for this reason the attention-grabbing thought that the best position within the first act of our universe may have really been performed through neutrinos.

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The B−L Phase Transition: Implications for Cosmology and Neutrinos (Springer Theses) by Kai Schmitz

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