Sökning: "strong correlations"

Visar resultat 6 - 10 av 204 avhandlingar innehållade orden strong correlations.

  1. 6. Electronic Structure Calculations: Materials with Weak and Strong Correlations

    Författare :Krister Karlsson; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; photoemission spectroscopy; band structure calculations;

    Sammanfattning : This thesis is devoted to studies of various electronic properties which can be extracted from photoemission spectroscopy. Both weakly and strongly correlated systems are discussed, ranging from free electron metal surfaces to strongly correlated copper oxide compounds. LÄS MER

  3. 7. One-dimensional theory of the quantum Hall system

    Författare :Emil Johansson Bergholtz; Anders Karlhede; Nicholas Read; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; fractional quantum Hall effect; thin torus; spin chains; conformal field theory; strong correlations; non-abelian states; Condensed matter physics; Kondenserade materiens fysik; Theoretical Physics; teoretisk fysik;

    Sammanfattning : The quantum Hall (QH) system---cold electrons in two dimensions in a perpendicular magnetic field---is a striking example of a system where unexpected phenomena emerge at low energies. The low-energy physics of this system is effectively one-dimensional due to the magnetic field. LÄS MER

  4. 8. Physics of Strong Correlations in Electronic Structure and Model Calculations

    Författare :Urban Lundin; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Physics; Strongly correlated electrons; Electronic structure calculations; Fysik; Physics; Fysik; fysik; Physics;

    Sammanfattning : Using field theoretical methods models of strongly correlated electrons have been investigated. Application to electronic structure calculations has been made. LÄS MER

  5. 9. Effects of Strong Correlations in Complex Oxides Investigated by Raman Spectroscopy

    Författare :Joakim Holmlund; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES;

    Sammanfattning : Our global environment is under excessive strain and we are facing a possible global climate change. There is a urgent need today for finding both alternative energy sources and new techniques for the transport and storage of energy in order to save our planet in its present status. LÄS MER

  7. 10. Hadronization Effects in the Strong Interaction

    Författare :Patrik Edén; Teoretisk partikelfysik - Geonomgår omorganisation; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; statistical physics; gravitation; relativity; Mathematical and general theoretical physics; classical mechanics; quantum mechanics; string fragmentation; baryon production; jets; QCD; hadronization; thermodynamics; Matematisk och allmän teoretisk fysik; klassisk mekanik; kvantmekanik; relativitet; statistisk fysik; termodynamik; High energy interactions; cosmic rays; Kosmisk strålning; högenergi;

    Sammanfattning : Different hadronization effects in high energy interactions are investigated. The frame-work is the Lund model for the strong interaction. A model for baryon production in jet fragmentation is presented and extended to baryon remnant fragmentation in deep inelastic scattering and hadron--hadron collisions. LÄS MER