Search for dissertations about: "Weyl systems"

Showing result 1 - 5 of 13 swedish dissertations containing the words Weyl systems.

  2. 1. Linear response theory: from black holes to Weyl systems and back

    Author : Jorge Laraña Aragón; Bo Sundborg; Lárus Thorlacius; Emil J. Bergholtz; Ulf Gran; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Linear response; Black holes; Thermalization; Holography; Weyl systems; Non-Hermitian systems; Theoretical Physics; teoretisk fysik;

    Abstract : Linear response theory is a powerful calculation tool in quantum field theory. We apply this framework to a variety of models originating from distinct areas in theoretical physics and for different reasons. READ MORE

  4. 2. Linear response theory : from black hole thermalization to Weyl semimetals

    Author : Jorge Laraña Aragón; Bo Sundborg; Edwin Langman; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Theoretical Physics; teoretisk fysik;

    Abstract : Linear response theory is an incredibly powerful calculation tool. We apply this framework in quantum field theory to a variety of models originated from distinct areas in theoretical physics and for different reasons. READ MORE

  5. 3. Anomaly and Topology : On the axial anomaly, domain wall dynamics, and local topological markers in quantum matter

    Author : Julia D. Hannukainen; Jens H. Bardarson; Adolfo G. Grushin; Teemu Ojanen; KTH; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; chiral anomaly; axial anomaly; topological phases of matter; Weyl semimetals; magnetic domain walls; local topological markers;

    Abstract : Chiral anomalies and topological phases of matter form the basis of the research presented in this dissertation. The chiral anomaly is considered both in the context of magnetic Weyl semimetals and in the context of non-Hermitian Dirac actions. READ MORE

  6. 4. Evaluation of NMR Knight shifts in metallic nanoparticles and topological matter

    Author : Wassilios Papawassiliou; Andrew Pell; Niklas Hedin; Ulla Gro Nielsen; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; solid-state NMR; Knight shifts; metallic systems; topological matter; nanoparticles; DFT calculations; Physical Chemistry; fysikalisk kemi;

    Abstract : Elucidating the surface electron states of transition metal compounds is of primary importance in main heterogeneous catalytic processes, such as the hydrogen and oxygen evolution reactions.  Key property in all these processes is the position of the energy of the d-band center relative to the Fermi-level of the catalyst; it must be shifted close to the Fermi level to achieve balance between adsorption and desorption of the catalyst and the adsorbate. READ MORE

  7. 5. Topology Meets Frustration : Exact Solutions for Topological Surface States on Geometrically Frustrated Lattices

    Author : Flore Kiki Kunst; Emil Bergholtz; Jack Lidmar; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Topology; boundary states; surface states; edge states; Chern insulator; Weyl semimetal; Theoretical Physics; teoretisk fysik;

    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