Sökning: "renormalization"

Visar resultat 1 - 5 av 34 avhandlingar innehållade ordet renormalization.

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

    Detta är en avhandling från Department of Astronomy and Theoretical Physics, Lund University

    Författare :Lisa Carloni; Lunds universitet.; Lund University.; [2011]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Renormalization; Effective theories; Phenomenological Models; Hidden Sectors;

    Sammanfattning : Popular Abstract in Swedish Denna avhandling handlar om modeller inom partikelfysik, vilka beskriver naturens minsta beståndsdelar. För att studera dessa små grundläggande byggstenar behöver man hög energi. Desto st ¨orre energi ju mindre avstånd kan man studera. LÄS MER

  2. 2. Renormalization of Lorenz Maps

    Detta är en avhandling från Stockholm : KTH Royal Institute of Technology

    Författare :Björn Winckler; KTH.; [2011]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; MATHEMATICS Algebra; geometry and mathematical analysis Mathematical analysis; MATEMATIK Algebra; geometri och analys Analys;

    Sammanfattning : 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. LÄS MER

  3. 3. Cluster Effective Field Theory

    Detta är en avhandling från ; Chalmers tekniska högskola; Gothenburg

    Författare :EMIL RYBERG; [2016]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; effective field theory; charge radius; resonant state; renormalization; radiative capture; halo nuclei; power counting; nuclear physics; few-body physics;

    Sammanfattning : Halo nuclei are loosely bound systems consisting of a core plus valence nucleon(s). In so called Halo, or Cluster, effective field theory, the core of the halo nucleus is treated as an effective degree-of-freedom without internal structure. LÄS MER

  4. 4. Non-Orthogonality and Electron Correlations in Nanotransport Spin- and Time-Dependent Currents

    Detta är en avhandling från Uppsala : Acta Universitatis Upsaliensis

    Författare :Jonas Fransson; Uppsala universitet.; [2002]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Physics; non-orthogonality; non-equilibrium; transport; nanosystem; quantum dot; spin-dependent; renormalization; Green function; diagram technique; many-body states; Hubbard operator; electron correlations; time-dependent; Fysik; icke-ortogonal; icke-jämvikt; transport; nanosystem; kvantprick; spinberoende; renormering; Green-funktion; diagramteknik; mångkropparstillstånd; Hubbadoperator; elektronkorrelationer; tidsberoende; NATURAL SCIENCES Physics; NATURVETENSKAP Fysik; Fysik; Physics;

    Sammanfattning : The concept of the transfer Hamiltonian formalism has been reconsidered and generalized to include the non-orthogonality between the electron states in an interacting region, e.g. quantum dot (QD), and the states in the conduction bands in the attached contacts. LÄS MER

  5. 5. Interacting Dirac Matter

    Detta är en avhandling från Stockholm : KTH Royal Institute of Technology

    Författare :Saikat Banerjee; KTH.; [2018]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Dirac; superconductor; magnon; interaction; Fermi liquid theory; renormalization; Physics; Fysik;

    Sammanfattning : The discovery of graphene in 2004 has led to a surge of activities focused on the theoretical and experimental studies of materials hosting linearly dispersive quasiparticles during the last decade. Rapid expansion in the list of materials having similar properties to graphene has led to the emergence of a new class of materials known as the Dirac materials. LÄS MER