Sökning: "renormalization"

Visar resultat 16 - 20 av 56 avhandlingar innehållade ordet renormalization.

  1. 16. Predictions of Effective Models in Neutrino Physics

    Författare :Johannes Bergström; Tommy Ohlsson; Rikard Enberg; KTH; []
    Nyckelord :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;

    Sammanfattning : 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. LÄS MER

  3. 17. Models in Neutrino Physics : Numerical and Statistical Studies

    Författare :Johannes Bergström; Tommy Ohlsson; Pilar Hernandez; KTH; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Neutrino mass; lepton mixing; Majorana neutrinos; neutrino oscillations; neutrinoless double beta decay; statistical methods; Bayesian inference; model selection; effective field theory; Weinberg operator; seesaw models; inverse seesaw; right-handed neutrinos; renormalization group; threshold effects.; Neutrinomassor; leptonblandning; Majorananeutriner; neutrinooscillationer; neutrinol¨ost dubbelt betas¨onderfall; statistiska metoder; Bayesisk inferens; modellval; effektiv f¨altteori; Weinbergoperator; seesawmodeller; invers seesaw; högerhänta neutriner; renormeringsgrupp; tröskeleffekter.;

    Sammanfattning : The standard model of particle physics can excellently describe the vast majorityof data of particle physics experiments. However, in its simplest form, it cannot account for the fact that the neutrinos are massive particles and lepton flavorsmixed, as required by the observation of neutrino oscillations. LÄS MER

  4. 18. Density Matrix Renormalization Group approach to anisotropic 3-dimensional bosons

    Författare :Gunnar Bollmark; Adrian Kantian; Salvatore Manmana; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES;

    Sammanfattning : .... LÄS MER

  5. 19. Density-Matrix Renormalization-Group Analysis of Kondo and XY models

    Författare :Ausrius Juozapavicius; KTH; []
    Nyckelord :Quantum spin chain; DMRG; XY model; Ising model; Kondo lattice model; magnetization;

    Sammanfattning : .... LÄS MER

  7. 20. Effective Field Theory for QCD-like Theories and Constraints on the Two Higgs Doublet Model

    Författare :Jie Lu; Teoretisk partikelfysik - Geonomgår omorganisation; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; QCD-like; effective field theory; symmetry breaking; renormalization group; two Higgs doublet model;

    Sammanfattning : This thesis includes two topics.The first three papers is the major part of this thesis, which is about higher order calculations in the effective field theories of three QCD-like theories. These three QCD-like theories are distinguished by having quarks in a complex, real or pseudo-real representation of gauge group. LÄS MER