Essays about: "non-equilibrium physics"
Showing result 1 - 5 of 14 essays containing the words non-equilibrium physics.
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1. Electron-skyrmion systems, in and out of equilibrium, and isolated or contacted to reservoirs
University essay from Lunds universitet/Matematisk fysik; Lunds universitet/Fysiska institutionenAbstract : A Kondo lattice skyrmion model in contact with a macroscopic environment is simulated to explore skyrmion dynamics, which is an extension of previous work. The system is simulated using non-equilibrium Green's functions within the generalized Kadanoff-Baym ansatz and the wide band limit. READ MORE
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2. Doping Layers in Quantum Cascade Lasers: A study in doping density, position and migration effects
University essay from Lunds universitet/Matematisk fysikAbstract : Quantum Cascade Lasers (QCLs) consist of several semiconductor materi- als sandwiched together. The QCL achieves stimulated emission in the mid-IR (m-IR) to the THz region of the electromagnetic spectrum by inter-subband transitions. These parts of the electromagnetic spectrum are hard to lase in with conventional means. READ MORE
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3. Green's Functions Investigations in Quantum Transport Geometries
University essay from Lunds universitet/Matematisk fysik; Lunds universitet/Fysiska institutionenAbstract : In this thesis we employ the non-equilibrium Green’s function (NEGF) method to study both finite and infinite systems. We develop a codebase capable of computing the steady state interacting NEGF in open systems, i.e. READ MORE
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4. Machine-Learning for Lattice Models in and out of Equilibrium
University essay from Lunds universitet/Matematisk fysik; Lunds universitet/Fysiska institutionenAbstract : Machine-learning methods have in recent years seen a great deal of use in condensed matter physics. In this thesis we apply such methods, specifically machine-learning with artificial neural networks, to the equilibrium and non-equilibrium description of the Hubbard and Hubbard-Holstein models. READ MORE
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5. Thermodynamical properties of cellular automata
University essay from Lunds universitet/Matematisk fysik; Lunds universitet/Fysiska institutionenAbstract : Cellular automata are a set of discrete computational models whose evolution is defined by neighbourhood rules and are used to simulate many complex systems in physics and science. In this work, statistical mechanics and thermodynamics in and out of equilibrium are used to develop a five-class classification scheme for two-dimensional cellular automata. READ MORE