Download PDF by Kai Schmitz: The B−L Phase Transition: Implications for Cosmology and

By Kai Schmitz

a number of of the very foundations of the cosmological regular version — the baryon asymmetry of the universe, darkish topic, and the starting place of the recent tremendous bang itself — nonetheless demand a proof from the point of view of primary physics. This work advocates one fascinating danger for a constant cosmology that fills within the theoretical gaps whereas being totally in response to the observational information. At very excessive energies, the universe could have been in a fake vacuum country 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 degree of hybrid inflation that in simple terms ended while the fake vacuum turned volatile and decayed, during a waterfall transition, right into a section with spontaneously damaged B-L symmetry. This B-L section Transition used to be followed via tachyonic preheating that transferred nearly the whole power of the fake vacuum right into a fuel of B-L Higgs bosons, which in flip decayed into heavy Majorana neutrinos. finally, those neutrinos decayed into massless radiation, thereby generating the entropy of the new gigantic bang, producing the baryon asymmetry of the universe through the leptogenesis mechanism and atmosphere the degree for the construction of darkish topic. subsequent to various conceptual novelties and phenomenological predictions, the most fulfillment of the thesis is accordingly the interesting idea that the best position within the first act of our universe may have truly 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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