Sökning: "weak coupling"

Visar resultat 21 - 25 av 101 avhandlingar innehållade orden weak coupling.

  1. 21. Perturbative Aspects of Supersymmetric Yang-Mills Theory on T3

    Författare :Fredrik Ohlsson; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES;

    Sammanfattning : This thesis is concerned with perturbative aspects of supersymmetric Yang-Mills theory in a space-time of the form T3xR, in the regime where the gauge coupling is weak. Wave functions of vacuum states of super Yang-Mills theoriesare supported on the moduli space of flat connections, and we consider a semi-classical treatment of such theories, obtained by expanding the fields around some normalizable zero energy background field configuration. LÄS MER

  3. 22. Statistical Energy Analysis and the Individual Case

    Författare :Claes Fredö; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; indirect couplings; random vibration; substructuring; transmission; statistical energy analysis; energy flow; theory; three subsystem;

    Sammanfattning : For many years, one of the most used methods for vibro-acoustic analysis of transmission of Structure-Borne Sound in complex built up structures has been the method of Statistical Energy Analysis (SEA). SEA has many advantages that makes it attractive for engineering use. LÄS MER

  4. 23. Charge transport in III-V narrow bandgap semiconductor nanowires

    Författare :Bekmurat Dalelkhan; NanoLund: Centre for Nanoscience; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; InAs; InSb; InP-InAs; narrow bandgap; spin-orbit interaction; quantum dots; Nanowires; Fysicumarkivet A:2019:Dalelkhan;

    Sammanfattning : This thesis describes charge transport in III-V narrow bandgap semiconductor nanowires. We are particularly interested in quantum transport in InSb, InAs and InP-InAs core-shell nanowires. According to the type of transport mechanism dominating in the devices, this thesis can be divided into four parts. LÄS MER

  5. 24. Towards the understanding of molecular properties in condensed phases from computer simulations and quantum mechanical calculations : methodological investigation and applications to water and related systems

    Författare :Yaoquan Tu; Florian Múller-Plathe; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Physical Chemistry; fysikalisk kemi;

    Sammanfattning : The present thesis summarizes some aspects in the studies of molecular properties by combining molecular dynamics computer simulations and quantum mechanical calculations. Applications to water and related system are overviewed. First, method of combined quantum mechanical and molecular mechanical (QM/MM) calculations is outlined. LÄS MER

  7. 25. Degenerate Geometries, Supersymmetry and Duality

    Författare :Henrik Gustafsson; Marcus Grisary; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Physics; fysik;

    Sammanfattning : String theory is a theory attempting to unify gravity with the electro-weak and strong interactions so successfully described by Quantum Field Theory. The implications of String Theory is not fully understood since it is still not a complete theory. LÄS MER