Browsing by Subject "Two-dimensional systems"

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    Effective mass calculations for two-dimensional gas of dipolar fermions
    (Springer New York LLC, 2017) Seydi, I.; Abedinpour, S. H.; Tanatar, Bilal
    We consider a two-dimensional system of ultracold dipolar fermions with dipole moments aligned in the perpendicular direction. We use the static structure factor information from Fermi-Hypernetted-Chain calculations to obtain the effective many-body dipole–dipole interaction and calculate the many-body effective mass of the system within the G0W approximation to the self-energy. A large cancellation between different contributions to the self-energy results in a weak dependence of the effective mass on the interaction strength over a large range of coupling constants.
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    Trapped interacting Bose gas in nonextensive statistical mechanics
    (The American Physical Society, 2002) Tanatar, Bilal
    We study the Bose-Einstein condensation (BEC) phenomenon in an interacting trapped Bose gas using the semiclassical two-fluid model and nonextensive statistical mechanics. The effects of nonextensivity characterized by a parameter are explored by calculating the temperature dependent thermodynamic properties, fraction of condensed particles, and density distributions of condensed and thermal components of the system. It is found that nonextensivity in the underlying statistical mechanics may have large effects on the BEC transition temperature.