Masters Thesis

Solitons in He Superfluid.

In this thesis we study soliton wave simulations constructed in the context of the Gross-Pitaivski Equation, a form of the Non-Linear Schrodinger Equation (NLS), and Time-dependent density functional theory (TDDFT). The above simulations allow us to identify soliton wave solutions in bulk superfluid 4He and study their dynamic properties. For the first time in the study of superfluid's, bright soliton where observed in bulk superfluid 4He. Both experimental and numerical simulation results are presented. Several characteristics of bright soliton dynamics in bulk 4He superfluid were observed and are investigated in this thesis.

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