Sökning: "Matematisk och allmän teoretisk fysik"
Visar resultat 6 - 10 av 37 avhandlingar innehållade orden Matematisk och allmän teoretisk fysik.
6. Tunneling Based Electronic Devices
Sammanfattning : This thesis concerns different kinds of tunneling based devices all showing negative differential resistance. The thesis is divided in three parts, resonant tunneling transistors, Esaki diodes and coupled zero dimensional systems. LÄS MER
7. Isospin Breaking in Kaon Decays to Pions
Sammanfattning : The five different K -> 3 Pi and the three K -> 2 Pi decays are calculated in Chiral Perturbation Theory. The calculation is done using different approximations, to study whether this changes the result significantly. First the isospin approximation is used. Discrepancies are then found between theory and experiment. LÄS MER
8. Gaps, Traps and Lattices - Correlations in Small Quantum Systems
Sammanfattning : This dissertation investigates properties of two-dimensional many-body systems. Studies are performed using the Spin-Density Functional Theory with the Local Spin-Density Approximation, and numerical exact diagonalization. LÄS MER
9. Pion and Kaon Dynamics at Higher Orders in Chiral Perturbation Theory
Sammanfattning : Higher orders calculations of processes involving the pion and kaon pseudo-scalar mesons are presented in the framework of three flavour Chiral Perturbation Theory. The purpose is two-fold. First determining the low energy constants of ChPT that are necessary for higher accuracy predictions. LÄS MER
10. Structure Functions and Final-State Properties in Deeply Inelastic electron-proton Scattering
Sammanfattning : In this thesis, we give a description of the detailed structure of the proton and a description of the final-state properties in electron-proton scattering. Qualitative results, in a purely gluonic scenario with the leading log approximation, and quantitative results, where quarks are included and some sub-leading corrections have been made, are presented. LÄS MER
