Search for dissertations about: "Renormalization"

Showing result 1 - 5 of 46 swedish dissertations containing the word Renormalization.

  1. 1. Numerical renormalization group methods

    Author : Martin Andersson; [1999]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; DMRG; renormalization groups; variational states;

    Abstract : .... READ MORE

  2. 2. Renormalization in Effective Field Theory and Hidden Radiation

    University dissertation from Department of Astronomy and Theoretical Physics, Lund University

    Author : Lisa Carloni; [2011]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Renormalization; Effective theories; Phenomenological Models; Hidden Sectors;

    Abstract : This thesis dealswith the field of high-energy particle physics. It ismainly concernedwith two issues: the “renormalization of effective field theories” and the “detection of hidden sectors”. The first two papers are dedicated to the renormalization issue while the second two deal with the hidden sectors. READ MORE

  3. 3. Numerical Renormalization, Doped Antiferromagnets, and Statistics - Topics in Low Dimensional Physics

    University dissertation from Department of Astronomy and Theoretical Physics, Lund University

    Author : Martin Andersson; [2001]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Josephson junctions; matrix-product states; fictitious flux; phase-separation; renormalization; stripes; t-J model; anyons; DMRG;

    Abstract : The first part of the thesis deals with so called numerical renormalization group methods, and in particular the density-matrix renormalization group (DMRG). This method performs extremely well for large one-dimensional quantum systems like spin-chains and Hubbard models. READ MORE

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

    University dissertation from Department of Astronomy and Theoretical Physics, Lund University

    Author : Joel Oredsson; [2019]
    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

  5. 5. Renormalization of Lorenz Maps

    University dissertation from Stockholm : KTH Royal Institute of Technology

    Author : Björn Winckler; Marco Martens; Michael Benedicks; Welington de Melo; [2011]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; MATHEMATICS Algebra; geometry and mathematical analysis Mathematical analysis; MATEMATIK Algebra; geometri och analys Analys;

    Abstract : This thesis is a study of the renormalization operator on Lorenz αmaps with a critical point. Lorenz maps arise naturally as first-return maps for three-dimensional geometric Lorenz flows. Renormalization is a tool for analyzing the microscopic geometry of dynamical systems undergoing a phase transition. READ MORE