Sökning: "Gross-Pitaevskii equation"

Hittade 2 avhandlingar innehållade orden Gross-Pitaevskii equation.

  1. 1. Aspects of Wave Interaction in Nonlinear Media

    Författare :Björn Hall; [2005]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; nonlinear Schrödinger equation; incoherent solitons; partial incoherence; nonlinear wave interaction; Gross-Pitaevskii equation; modulational instability; collective dynamics; Wigner transform; nonlinear guided waves; Bose-Einstein condensation;

    Sammanfattning : Selected aspects of various types of nonlinear wave interaction are investigated. These aspects are studied in terms of models described by Nonlinear Schrödinger equations, mainly analytically and numerically, but also experimentally. LÄS MER

  2. 2. Vortices and Persistent Currents in Rotating Bose Gases - a Diagonalization Approach

    Författare :Sara Bargi; Lund University.; Lunds universitet.; Lund University.; Lunds universitet.; [2010]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Bose-Einstein condensation; vortices; superfluidity; Fysicumarkivet A:2010:Bargi;

    Sammanfattning : In this thesis, I explore the behavior of rotating ultra-cold Bose gases, by diagonalizing the Hamiltonian. This method has the advantage of being exact in the limit of weak interactions, and thus is a useful complement to the more commonly used Gross-Pitaevskii (GP) equation, which relies on a mean-field approximation. LÄS MER