Sökning: "Perturbation theory"

Visar resultat 1 - 5 av 53 uppsatser innehållade orden Perturbation theory.

  1. 1. The last unknown leading order low-energy constant of chiral perturbation theory

    Master-uppsats, Uppsala universitet/Kärnfysik

    Författare :Magnus Bertilsson; [2024]
    Nyckelord :QCD; Form factors; Vector form factors; Chiral perturbation theory; Hadrons; Hadron physics; hyperon decay; semileptonic decay;

    Sammanfattning : .... LÄS MER

  3. 2. An Algorithm for Sampling from Bandlimited Circular Probability Distributions

    Kandidat-uppsats, KTH/Skolan för teknikvetenskap (SCI)

    Författare :Mattias Olofsson; [2023]
    Nyckelord :Matematisk Statistik;

    Sammanfattning : In this Bachelor thesis, a novel algorithm for sampling from bandlimited circular probability distributions is presented. The algorithm leverages results from Fourier analysis concerning the Fejér kernel to simulate data with some desired probability distribution, realized as a sum of data sampled from a discrete distribution and a small continuous perturbation sampled from the Fejér kernel distribution. LÄS MER

  4. 3. An operator theoretic approach to the Riemann Hypothesis

    Master-uppsats, Lunds universitet/Matematik (naturvetenskapliga fakulteten); Lunds universitet/Matematikcentrum

    Författare :Ramon Arjan van de Scheur; [2023]
    Nyckelord :Riemann hypothesis; Prime number theorem; Prime number theorem for arithmetic progressions; operator theoretic equivalent; compact operator; prime-counting function; Chebyshev function; Laplace transform; Fourier transform; convolution operator; weak topology; strong topology; compact perturbation; Tauberian theorem; Poisson kernel; holomorphic; self-adjoint; spectrum; trace; Mathematics and Statistics;

    Sammanfattning : In 2023 an operator theoretic approach to the Prime Number Theorem was introduced by Olsen. In this thesis this approach is examined and applied to give a new, operator theoretic, proof of a different version of the Prime Number Theorem and of the Prime Number Theorem for arithmetic progressions. LÄS MER

  5. 4. Studies of the axial-vector transition form factors of the process Ω− → W−Ξ0 in chiral perturbation theory

    Master-uppsats, Uppsala universitet/Kärnfysik

    Författare :Hélène De Munck; [2023]
    Nyckelord :Transition form Factors; Next-to-next-to-leading order; chiral perturbation theory; axial-vector; Ω− → W−Ξ0;

    Sammanfattning : This work is included in a broader research of the hadron theory group of Uppsala University and its collaborators tackling the quest for an understanding of the quark distribution inside hadrons by joining threedifferent approaches of QCD namely chiral perturbation theory, dispersion theory and lattice QCD. This thesis contributes by computing in chiral perturbation theory, the quark-masses dependence of form factors. LÄS MER

  7. 5. Path integrals in Quantum Mechanics and their application to low-dimensional supersymmetry

    Kandidat-uppsats, Uppsala universitet/Teoretisk fysik

    Författare :Gaétan Kaouadji; [2023]
    Nyckelord :Path integrals quantum mechanics quantum field theory supersymmetry;

    Sammanfattning : This report aims to give an insight to the path integral formalism in quantum mechanics. After explaining the kernel's construction, some of its properties and ways to compute it, we see how it relates to the Schrödinger picture. Moreover, we see how its representation can change if it is defined in the space, momentum, time or energy space. LÄS MER