Essays about: "egenvärdesproblem"
Found 4 essays containing the word egenvärdesproblem.
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1. Phase Diagrams of Finite Spin Chains with Coupled Spin and Lattice Vibrations
University essay from Uppsala universitet/MaterialteoriAbstract : The spin-lattice coupling is due to itinerant electrons interacting with both spins of ions and phonons, mediating a coupling between magnetic spin moments and lattice vibrations. In this project, the coupling is studied systematically for finite quantum spin chains of size 2 – 10. READ MORE
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2. A numerical investigation of Anderson localization in weakly interacting Bose gases
University essay from KTH/Numerisk analys, NAAbstract : The ground state of a quantum system is the minimizer of the total energy of that system. The aim of this thesis is to present and numerically solve the Gross-Pitaevskii eigenvalue problem (GPE) as a physical model for the formation of ground states of dilute Bose gases at ultra-low temperatures in a disordered potential. READ MORE
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3. Evaluation of methods for quantifying returns within the premium pension
University essay from KTH/Matematisk statistikAbstract : Pensionsmyndigheten's (the Swedish Pensions Agency) current calculation of the internal rate of return for 7.7 million premium pension savers is both time and resource consuming. READ MORE
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4. Computation of Eigenmodes in Three-Dimensional Structures
University essay from KTH/Skolan för teknikvetenskap (SCI)Abstract : In this thesis the eigenmodes and eigenvalues of three dimensional structures are analyzed using the Python environment FEniCS in combination with an implementation of the Arnoldi method in MATLAB for calculation of eigenpairs. This is done by considering separable solutions of the wave equation and subsequently expressing these as the solutions to an eigenvalue problem. READ MORE