Sökning: "multi-scalar theory"

Hittade 4 avhandlingar innehållade orden multi-scalar theory.

  1. 1. Beta functions and multi-scalar gauge theory

    Författare :Nadia Flodgren; Bo Sundborg; Konstantin Zarembo; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; multi-scalar theory; gauge theory; theoretical physics; renormalization group theory; high-energy physics; Theoretical Physics; teoretisk fysik;

    Sammanfattning : In this licentiate thesis, we provide the context and background for our work One-loop algebras and fixed flow trajectories in adjoint multi-scalar gauge theory (published in JHEP) on the renormalization group flow for a multi-scalar SU(N) gauge theory. The background consists of a description of renormalization group flow, with a focus on beta functions andhow to find fixed points, and multi-scalar theories. LÄS MER

  3. 2. Phenomenology in multi-scalar extensions of the Standard Model

    Författare :Astrid Ordell; Teoretisk partikelfysik - Geonomgår omorganisation; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; BSM; 2HDMs; BSM; 2HDMs; Fysicumarkivet A:2020:Ordell;

    Sammanfattning : This thesis is composed of four papers, which all treat various extensions to the Standard Model (SM). The first two papers concern a particular supersymmetric, grand-unified theory (GUT), while in the latter two, we classify anomaly-free implementations of two-Higgs doublet models (2HDM) with a gauged abelian symmetry. Paper I. LÄS MER

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

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

    Sammanfattning : 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. LÄS MER

  5. 4. Family symmetries and radiative corrections in multi-scalar extensions of the Standard Model

    Författare :Jonas Wessén; Teoretisk partikelfysik - Geonomgår omorganisation; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Beyond the Standard Model; Trinification; Grand Unification; Three Higgs doublet models; Coleman-Weinberg potential; Supersymmetry; Left-Right symmetry; Fysicumarkivet A:2018:Wessén;

    Sammanfattning : The four articles contained in this thesis all concern aspects of model building beyond the Standard Model (BSM). While Paper I mainly serves as a ``tool paper'' in which the results can be used to simplify certain calculations of one-loop effects from new heavy particles, Paper II--IV all deal with consequences of family symmetries in several BSM scenarios. LÄS MER