Search for dissertations about: "perturbation"
Showing result 21 - 25 of 434 swedish dissertations containing the word perturbation.
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21. Nonlinearly Perturbed Renewal Equations : asymptotic Results and Applications
Abstract : In this thesis we investigate a model of nonlinearly perturbed continuous-time renewal equation. Some characteristics of the renewal equation are assumed to have non-polynomial perturbations, more specifically they can be expanded with respect to a non-polynomial asymptotic scale. READ MORE
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22. Time-Dependent Many-Body Perturbation Theory: Possibilities and Limitations
Abstract : This dissertation investigates the possibilities and limitations of time-dependent many-body perturbation theory by studying small Hubbard clusters for which the exact solution is available. The first part of the thesis is comprised of a short introduction to the concepts and methodologies used. READ MORE
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23. Pion and Kaon Dynamics at Higher Orders in Chiral Perturbation Theory
Abstract : 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. READ MORE
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24. QM/MM free-energy perturbation and other methods to estimate ligand-binding affinities
Abstract : Experimental drug discovery is very time-consuming, risky and comes at a huge cost, typically several billion USD per drug. Even though decades of experimental drug discovery have provided cures of many diseases, there are still diseases for which there is no effective drug available. READ MORE
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25. Multi-Meson Dynamics in Chiral Perturbation Theory
Abstract : This thesis concerns scattering of light mesons in the case where the number of external particles exceeds four (that is, three or more particles in the initial or final state), calculated using chiral perturbation theory.This is both of theoretical interest in the study of scattering amplitudes, and relevant for systems of three or more pions simulated using lattice quantum chromodynamics. READ MORE