A New Method for Derivation of Statistical Weight of the Gentile Statistics

We present a new method for obtaining the statistical weight of the Gentile Statistics. In a recent paper, Perez and Tun presented an ap- proximate combinatoric and an exact recursive formula for the statistical weight of Gentile Statistics, beginning from bosonic and fermionic cases, respectively [1]. In this paper, we obtain two exact, one combinatoric and one recursive, formulae for the statistical weight of Gentile Statistics, by an another approach. The combinatoric formula is valid only for special cases, whereas recursive formula is valid for all possible cases. Moreover, for a given q-maximum number of particles that can occupy a level for Gentile statistics-the recursive formula we have derived gives the result much faster than the recursive formula presented in [1], when one uses a computer program. Moreover we obtained the statistical weight for the distribution proposed by Dai and Xie in Ref. [2]. Keywords: Fractional statistics, Gentile distribution, Statistical WeightComment: 16 pages, 9 Figure

Effect of Dimple Potential on Ultraslow Light in a Bose-Einstein Condensate

We investigate the propagation of ultraslow optical pulse in atomic Bose-Einstein condensate in a harmonic trap decorated with a dimple potential. The role of dimple potential on the group velocity and time delay is studied. Since we consider the interatomic scattering interactions nonlinear Schrodinger equation or Gross-Pitaevskii equation is used in order to get the density profile of the atomic system. We find large group delays of order 1 msec in an atomic Bose-Einstein condensate in a harmonic trap with a deep dimple potential.Comment: 4 pages, 2 figure