Search for dissertations about: "fine topology"
Showing result 1 - 5 of 14 swedish dissertations containing the words fine topology.
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1. Topology Meets Frustration : Exact Solutions for Topological Surface States on Geometrically Frustrated Lattices
Abstract : One of the main features of topological phases is the presence of robust boundary states that are protected by a topological invariant. Famous examples of such states are the chiral edge states of a Chern insulator, the helical edge states of a two-dimensional Z2 insulator, and the Fermi arcs of Weyl semimetals. READ MORE
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2. Pluripolar Sets and Pluripolar Hulls
Abstract : For many questions of complex analysis of several variables classical potential theory does not provide suitable tools and is replaced by pluripotential theory. The latter got many important applications within complex analysis and related fields. Pluripolar sets play a special role in pluripotential theory. READ MORE
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3. Topology optimization of antennas and waveguide transitions
Abstract : This thesis introduces a topology optimization approach to design, from scratch, efficient microwave devices, such as antennas and waveguide transitions. The design of these devices is formulated as a general optimization problem that aims to build the whole layout of the device in order to extremize a chosen objective function. READ MORE
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4. Internal Cooling Design Using Multiphysics Topology Optimization
Abstract : This thesis investigates topology optimization (TO) as a tool for designing optimal internal cooling configurations in components subjected to external hot gas streams. The work is motivated by the challenge of simultaneously considering objectives from multiple physics domains, and the rapid development of additive manufacturing (AM) in the industry, which makes it possible to realize highly complex TO designs. READ MORE
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5. Knotted Nodal Band Structures
Abstract : It is well known that in conventional three dimensional (3D) Hermitian two band models, the intersections between the energy bands are generically given by points. The typical example are Weyl semimetals, where these singular points can be effectively described as Weyl fermions in the low energy regime. READ MORE