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    Effects of a dimple potential on the ground-state properties of a quasi-one-dimensional Bose-Einstein condensate with two- and three-body interactions
    (ELSEVIER, 2015) Karabulut, Elife O.
    The ground state of a quasi-one-dimensional interacting Bose gas confined by a harmonic plus Gaussian dimple potential is studied within the variational approach and also Gross-Pitaevskii mean-held approximation. The effect of the superimposed dimple trap on the order parameter, the chemical and effective potentials of the system is analyzed for repulsive and attractive two- as well as three-body interactions between the particles. The results obtained from both methods show that the characteristics of the trap such as the width and depth of the dimple affect the corresponding ground state properties of the system in a qualitatively similar way to the repulsive and attractive interatomic interactions, respectively. (C) 2015 Elsevier B.V. All rights reserved.
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    Thermodynamics of a two-dimensional interacting Bose gas trapped in a quartic potential
    (ELSEVIER SCIENCE BV, 2011) Karabulut, Elife O.; Koyuncu, Mustafa; Atav, Ulfet; Tomak, Mehmet
    We have studied the Bose-Einstein condensation (BEC) of an interacting Bose gas confined in a two-dimensional (2D) quartic potential by using a mean-field, semiclassical two-fluid model. A thermodynamic analysis including the chemical potential, condensate fraction, total energy, and specific heat has been carried out by considering different values of the interaction strength. Finally, we have found that the behaviour of the condensate fraction and specific heat of quartically trapped bosons differs from those of bosons trapped in a harmonic potential. (C) 2010 Elsevier B.V. All rights reserved.