Sökning: "Klein-Gordon"

Hittade 3 avhandlingar innehållade ordet Klein-Gordon.

  1. 1. On space-time means for solutions of nonlinear Klein-Gordon equations

    Författare :Håkan Blomqvist; Göteborgs universitet; Göteborgs universitet; Gothenburg University; []
    Nyckelord :nonlinear Klein-Gordon equation; linear Klein-Gordon equation; asymptotic properties; rate of decay; boundedness of space-time means; properties inherited from the corresponding linear case; nonlinear Volterra integral inequality with singular kernel; nonlinear Klein-Gordon equation;

    Sammanfattning : .... LÄS MER

  2. 2. Transient waves in nonstationary media : with applications to lightning and nonlinear media

    Författare :Ingegerd Åberg; Institutionen för elektro- och informationsteknik; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; lightning; Klein-Gordon; nonlinear; characteristics; wave splitting; imbedding; sources; propagators; Green functions; direct and inverse scattering; Nonstationary; transient; high-frequency switching; Kerr.; Technological sciences; Teknik;

    Sammanfattning : Propagation of transient waves in nonstationary, inhomogeneous, dispersive, stratified media is considered. Waves originating from sources exterior to the scatterer as well as from internal sources are treated. Algorithms are developed and illustrated by computations of wave phenomena in stationary, nonstationary and weakly nonlinear media. LÄS MER

  3. 3. Aspects of extra dimensions and membranes

    Författare :Martin Sundin; Edwin Langmann; Teresia Månsson; Fawad Hassan; KTH; []
    Nyckelord :NATURAL SCIENCES; NATURVETENSKAP; NATURVETENSKAP; NATURAL SCIENCES; Extra dimensions; Brane world scenarios; Supermembranes; Mathematical physics; Matematisk fysik;

    Sammanfattning : This thesis is about thwo papers related to extra dimensions. Paper A discusses extrinsic curvature effects, and paper B treats symmetries of supersymmetric membranes. In the part of this thesis related to paper A, we extend the theory of non-relativistic quantum particles confined to submanifolds to relativistic boson fields. LÄS MER