Condensate fraction and critical temperature of interacting Bose gas in anharmonic trap
arXiv:1403.2717 · doi:10.1140/epjd/e2014-50337-6
Abstract
By using a correlated many body method and using the realistic van der Waals potential we study several statistical measures like the specific heat, transition temperature and the condensate fraction of the interacting Bose gas trapped in an anharmonic potential. As the quadratic plus a quartic confinement makes the trap more tight, the transition temperature increases which makes more favourable condition to achieve Bose-Einstein condensation (BEC) experimentally. BEC in 3D isotropic harmonic potential is also critically studied, the correction to the critical temperature due to finite number of atoms and also the correction due to inter-atomic interaction are calculated by the correlated many-body method. Comparison and discussion with the mean-field results are presented.
References in corpus (9)
- Bose-Einstein condensation with a finite number of particles in a power-law trap
- Resonance States and Quantum Tunneling of Bose Einstein condensates in a 3D shallow trap
- Stability of attractive bosonic cloud with van der Waals interaction
- Correlated many-body calculation to study characteristics of Shannon information entropy for ultracold trapped interacting bosons
- Destruction of attractive bosonic cloud due to high spatial coherence in tight trap
- Behavior of heat capacity of an attractive Bose-Einstein Condensate approaching collapse
- Macroscopic quantum many-body tunneling of attractive Bose-Einstein condensate in anharmonic trap
- Thermodynamic properties of ultracold Bose gas: transition exponents and universality
- Thermodynamical properties of a trapped interacting Bose gas