Essays about: "dispersion theory"

Showing result 1 - 5 of 44 essays containing the words dispersion theory.

  1. 1. Z2-Gauge Theory with Matter : Dispersive behaviour of a dimer in a 1+1-dimensional lattice

    University essay from Karlstads universitet/Institutionen för ingenjörsvetenskap och fysik (from 2013)

    Author : Filip Ekblom; [2023]
    Keywords : Spin chain; Ising model; Dimer; Lattice; Lattice gauge theory;

    Abstract : The intention with this thesis is to investigate a dimer in a spin chain. Inorder to do that, a model from Z2-gauge theory is taken as the theoretical motivation to construct a discrete lattice with Ising spin properties. A dimer is then allowed to exist indirectly in the empty space between sites. READ MORE

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

    University essay from Uppsala universitet/Kärnfysik

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

    Abstract : 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. READ MORE

  4. 3. The impact of family ownership on capital structure - Empirical evidence from Swedish family firms

    University essay from Uppsala universitet/Företagsekonomiska institutionen

    Author : Hassan Khadhem; Safaa Ishak; [2023]
    Keywords : Family ownership; capital structure; corporate governance; agency theory.;

    Abstract : This study investigates how family ownership affects firms' financing decisions in Sweden. The study uses data on publicly listed firms in Sweden from 2014-2019 with 730 firm-year observations. Sweden has a significant portion of family firms and a business environment where control-enhancing mechanisms are used to a large extent. READ MORE

  5. 4. Planes of satellite galaxies

    University essay from Lunds universitet/Astronomi - Genomgår omorganisation

    Author : Jessica Laura Erika Kocher; [2022]
    Keywords : Physics and Astronomy;

    Abstract : The Planes of Satellites Problem is an open question within the field of galaxy formation. It is based on the observations that the Milky Way's satellites, as well as those around the Andromeda (M31) galaxy, align in planes. READ MORE

  6. 5. Gravitational Waves in Bimetric Gravity

    University essay from Uppsala universitet/Institutionen för fysik och astronomi

    Author : Erik Schildt; [2022]
    Keywords : ;

    Abstract : Understanding the cause of the accelerated expansion of the Universe is one of the most pressing issues in modern cosmology. An alternative to the LambdaCDM-model is bimetric gravity which is an extension of Einstein's theory of general relativity. READ MORE