Essays about: "eigenvalue problem"

Showing result 6 - 10 of 36 essays containing the words eigenvalue problem.

  1. 6. Phase Diagrams of Finite Spin Chains with Coupled Spin and Lattice Vibrations

    University essay from Uppsala universitet/Materialteori

    Author : Siri Alva Berge; [2021]
    Keywords : spin-lattice coupling; spin-vibration coupling; Heisenberg exchange; magnetism;

    Abstract : 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

  3. 7. A numerical investigation of Anderson localization in weakly interacting Bose gases

    University essay from KTH/Numerisk analys, NA

    Author : Crystal Ugarte; [2020]
    Keywords : Applied mathematics; finite elements; eigenvalue solver; eigenvalue problem; Bose-Einstein Codensate; Finita elementmetoden; tillämpad matematik; Bose-Einstein kondensat; egenvärdesalgoritm; egenvärdesproblem;

    Abstract : 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

  4. 8. Evaluation of methods for quantifying returns within the premium pension

    University essay from KTH/Matematisk statistik

    Author : Emil Backman; David Petersson; [2020]
    Keywords : Pension; internal rate of return; applied mathematics; big matrix; numerical methods; large eigenvalue problem; finance; risk analysis; extreme value modeling; probability; stochastic modeling; Pension; intern ränta; tillämpad matematik; stora matrismetoder; numeriska metoder; stora egenvärdesproblem; finans; riskanalys; modellering av extrema värden; sannolikhet; stokastisk modellering;

    Abstract : 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

  5. 9. Green Fuel Simulations

    University essay from Luleå tekniska universitet/Institutionen för teknikvetenskap och matematik

    Author : Daniel Gutiérrez; [2020]
    Keywords : Industrial gas turbines; Combustion instabilities; Computational fluid dynamics; Acoustics; COMSOL Multiphysics; Flame transfer function;

    Abstract : Many industries have entered a new global phase which takes the environment in mind. The gas turbine industry is no exception, where the utilization of green fuels is the future to spare the environment from carbon dioxide and NOx emissions. READ MORE

  6. 10. Quantum Optimization

    University essay from Lunds universitet/Matematisk fysik; Lunds universitet/Fysiska institutionen

    Author : Luca Bernecker; [2020]
    Keywords : Quantum; Optimization; HHL; VQE; Optimisation; Physics; Physics and Astronomy;

    Abstract : This thesis concerns the implementation of quantum algorithms on a computer vision problem called bundle adjustment. Bundle adjustment can be simplified for illustration purposes by the following example. Two different cameras take a picture of the same object in different angles. READ MORE