2 papers
cond-mat.other2005
Momentum distribution and condensate fraction of a Fermi gas in the BCS-BEC crossover
G. E. Astrakharchik, J. Boronat, J. Casulleras +1
By using the diffusion Monte Carlo method we calculate the one- and two-body density matrix of an interacting Fermi gas at T=0 in the BCS-BEC crossover. Results for the momentum di…
cond-mat2002
Correlation functions and momentum distribution of one-dimensional Bose systems
G. E. Astrakharchik, S. Giorgini
The ground-state correlation properties of a one-dimensional Bose system described by the Lieb-Liniger Hamiltonian are investigated by using exact quantum Monte Carlo techniques. T…