# Pair-correlation properties and momentum distribution of finite number of interacting trapped bosons in three dimension 

Anindya Biswas 1 , a) , Barnali Chakrabarti 2 , 3 and Tapan Kumar Das 1 1 

$^{1}$Department of Physics, University of Calcutta, 92 A.P.C. Road, Kolkata 700009, India 

$^{2}$The Abdus Salam International Centre for Theoretical Physics, 34100, Trieste, Italy 

$^{3}$Department of Physics, Lady Brabourne College, P-1/2 Suhrawardy Avenue, Kolkata 700017, India 

We study the ground state pair-correlation properties of a weakly interacting trapped Bose gas in three dimension by using a correlated many-body method. Use of the van der Waals interaction potential and an external trapping potential shows real- istic features. We also test the validity of shape-independent approximation in the calculation of correlation properties. 

PACS numbers: 03.75.Hh, 03.65.Ge, 03.75.Nt 

