Search for dissertations about: "Renormalization group equations"

Showing result 1 - 5 of 6 swedish dissertations containing the words Renormalization group equations.

  2. 1. Soft resummation and hard evolution : Renormalization group methods in effective theories and multi scalar models

    Author : Joel Oredsson; Teoretisk partikelfysik - Geonomgår omorganisation; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Higgs; Particle physics; two-Higgs-doublet model; Soft-Collinear-Effective Theory; Renormalization;

    Abstract : This thesis is composed out of five papers that deal with various problems intheoretical particle physics. While paper I is a precision calculation in aneffective theory of the Standard Model, paper II to V all deal with beyond theStandard Model physics. Paper IV is a manual for the tools developed during ourwork on paper II to V.Paper I. READ MORE

  4. 2. Phenomenology of SO(10) Grand Unified Theories

    Author : Marcus Pernow; Tommy Ohlsson; Werner Rodejohann; KTH; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Grand unified theories; Renormalization group equations; Neutrino masses; Gauge coupling unification;

    Abstract : Although the Standard Model (SM) of particle physics describes observations well, there are several shortcomings of it. The most crucial of these are that the SM cannot explain the origin of neutrino masses and the existence of dark matter. READ MORE

  5. 3. Predictions of Effective Models in Neutrino Physics

    Author : Johannes Bergström; Tommy Ohlsson; Rikard Enberg; KTH; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Neutrino mass; lepton mixing; Majorana neutrinos; effective field theory; Weinberg operator; seesaw models; low-scale seesaw models; inverse seesaw; right-handed neutrinos; renormalization group; threshold effects; neutrinoless double beta decay; Elementary particle physics; Elementarpartikelfysik;

    Abstract : Experiments on neutrino oscillations have confirmed that neutrinos have small, but non-zero masses, and that the interacting neutrino states do not have definite masses, but are mixtures of such states.The seesaw models make up a group of popular models describing the small neutrino masses and the corresponding mixing. READ MORE

  6. 4. Models of SO(10) Grand Unified Theories : Yukawa Sector and Gauge Coupling Unification

    Author : Marcus Pernow; Tommy Ohlsson; Frank Deppisch; KTH; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; grand unified theories; renormalization group equations; neutrino masses; threshold effects; gauge coupling unification; Fysik; Physics;

    Abstract : .... READ MORE

  7. 5. On transport theory of correlated mesoscopic systems

    Author : Vadim Cheianov; Uppsala universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Theoretical physics; Teoretisk fysik; Physics; Fysik; fysik; Physics;

    Abstract : This thesis is about the theory of quantum transport through low dimensional correlated systems. Correlated systems are interacting many-particle systems where collective effects predominate over the individual properties of particles whereof they consist. Single particle approach to correlated systems would be essentially wrong. READ MORE