Sökning: "Elektrodynamik"

Hittade 5 uppsatser innehållade ordet Elektrodynamik.

1. 1. On the Existence of Electrodynamics on Manifold-like Polyfolds

   Uppsats för yrkesexamina på avancerad nivå, Umeå universitet/Institutionen för fysik

   Författare :Aron Persson; [2019]
   Nyckelord :;

   Sammanfattning : This essay examines the question whether the classical theory of electrodynamics can be extended to a spacetime which locally changes dimension and if such an endeavour is mathematically possible. Recent research has developed a new generalisation of smooth manifolds, the so called M-polyfolds, which constitutes a sufficient foundation to make this endeavour a physical plausibility. LÄS MER

3. 2. Axion Electrodynamics and Measurable Effects in Topological Insulators

   Master-uppsats, Karlstads universitet/Fakulteten för hälsa, natur- och teknikvetenskap (from 2013)

   Författare :Andreas Asker; [2018]
   Nyckelord :Topological Insulators; Axion Electrodynamics; Topological Magnetoelectric Effect; Topological Field Theory; Faraday-Kerr Effect; Topologiska Isolatorer; Axion Elektrodynamik; Topologiska Magnetoelektriska Effekten; Topologisk Fältteori; Faraday-Kerr Effekten;

   Sammanfattning : Topological insulators are materials with their electronic band structure in bulk resembling that of an ordinary insulator, but the surface states are metallic. These surface states are topologically protected, meaning that they are robust against impurities. LÄS MER

4. 3. Path Integrals and Quantum Mechanics

   Kandidat-uppsats, Umeå universitet/Institutionen för fysik

   Författare :Martin Sandström; [2015]
   Nyckelord :quantum; path integral; aharonov-bohm;

   Sammanfattning : In this thesis we are investigating a different formalism of non-relativistic quantum mechanics called the path integral formalism. It is a generalization of the classical least action principle. LÄS MER

5. 4. On the geometry of calibrated manifolds : with applications to electrodynamics

   Master-uppsats, Umeå universitet/Institutionen för matematik och matematisk statistik

   Författare :Rasmus Leijon; [2013]
   Nyckelord :Calibrations; geometry; plurisubharmonic functions; special Lagrangian; electrodynamics; manifolds.;

   Sammanfattning : In this master thesis we study calibrated geometries, a family of Riemannian or Hermitian manifolds with an associated differential form, φ. We show that it isuseful to introduce the concept of proper calibrated manifolds, which are in asense calibrated manifolds where the geometry is derived from the calibration. LÄS MER

7. 5. Modeling and OpenFOAM simulation of streamers in transformer oil

   Master-uppsats, Institutionen för fysik, kemi och biologi; Tekniska högskolan

   Författare :Jonathan Fors; [2012]
   Nyckelord :Computational Physics; High voltage; OpenFOAM; Streamer; Electric insulation; Electrodynamics; Finite Volume Method; Beräkningsfysik; Högspänningsteknik; OpenFOAM; Streamer; Elektrisk isolation; Elektrodynamik; Finita volymsmetoden;

   Sammanfattning : Electric breakdown in power transformers is preceded by pre-breakdown events such as streamers. The understanding of these phenomena is important in order to optimize liquid insulation systems. Earlier works have derived a model that describes streamers in transformer oil and utilized a finite element method to produce numerical solutions. LÄS MER