Majorana neutrinos and their oscillations in QFT

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http://urn.fi/URN:NBN:fi:hulib-202012114991
Title: Majorana neutrinos and their oscillations in QFT
Author: Kupiainen, Tomi
Contributor: University of Helsinki, Faculty of Science
Publisher: Helsingin yliopisto
Date: 2020
Language: eng
URI: http://urn.fi/URN:NBN:fi:hulib-202012114991
http://hdl.handle.net/10138/322830
Thesis level: master's thesis
Degree program: Teoreettisten ja laskennallisten menetelmien maisteriohjelma
Master's Programme in Theoretical and Computational Methods
Magisterprogrammet i teoretiska och beräkningsmetoder
Specialisation: Fysiikka
Physics
Fysik
Discipline: none
Abstract: In this work we consider the method of unitarily inequivalent representations in the context of Majorana neutrinos and a simple seesaw model. In addition, the field theoretical framework of neutrino physics, namely that of QFT and the SM, is reviewed. The oscillating neutrino states are expressed via suitable quantum operators acting on the physical vacuum of the theory, which provides further insight to the phenomenological flavor state ansatz made in the standard formulation of neutrino oscillations. We confirm that this method agrees with known results in the ultrarelativistic approximation while extending them to the non-relativistic region.
Subject: Neutrino physics
quantum field theory
unitarily inequivalent representations
Majorana
seesaw


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