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    • Quality of potential harmonics expansion method for dilute Bose–Einstein condensate

      Anasuya Kundu Barnali Chakrabarti

      Research Articles Volume 69 Issue 3 September 2007 pp 329-336

    • Fulltext

       

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      Permanent link:
      https://www.ias.ac.in/article/fulltext/pram/069/03/0329-0336

    • Keywords

       

      Bose–Einstein condensation; hyperspherical harmonics method; potential harmonics.

    • Abstract

       

      We present and examine an approximate but ab initio many-body approach, viz., potential harmonics expansion method (PHEM), which includes two-body correlations for dilute Bose–Einstein condensates. Comparing the total ground state energy for three trapped interacting bosons calculated in PHEM with the exact energy, the new method is shown to be very good in the low density limit which is necessary for achieving Bose–Einstein condensation experimentally.

    • Author Affiliations

       

      Anasuya Kundu1 Barnali Chakrabarti2

      1. Department of Physics, University of Calcutta, 92 A.P.C. Road, Kolkata 700 009, India
      2. Department of Physics, Lady Brabourne College, P1/2 Surawardi Avenue, Kolkata 700 017, India

    • Dates

       
      Published
      September 2007
      Manuscript received
      28 November 2006
      Manuscript revised
      27 April 2007
      Accepted
      8 June 2007

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