Bose condensation and momentum distribution in a simplified liquid-$sup 4$He ground state

Journal Article · Mon Oct 01 04:00:00 EDT 1973 · Phys. Rev., A, v. 8, no. 4, pp. 2009-2016

OSTI ID:4356637

Girardeau, M D; Yoon, S Y

Bose-Einstein condensation and the atomic momentum distribution are investigated for a simplified liquid /sup 4/He ground state obtained by ables, of a product of /sup 4/He-atom wave functions, each in its individual electronic and translational ground state. The momentum distribution is defined and evaluated by the method of redundant modes and generalized Tani transformation. Bose- Einstein condensation is found, with a condensate depletion of 6% owing to the purely kinematical repulsion arising from the Pauli exclusion principle. The noncondensed atoms are spread in momentum space by an amount of a few inverse Bohr radii. Dynarmical correlations would increase the depletion in a more realistic ground state. (auth)

• Research Organization: Institute of Theoretical Science and Department of Physics, University of Oregon, Eugene, Oregon 97403
• NSA Number: NSA-29-014021
• OSTI ID: 4356637
• Journal Information: Phys. Rev., A, v. 8, no. 4, pp. 2009-2016, Journal Name: Phys. Rev., A, v. 8, no. 4, pp. 2009-2016; ISSN PLRAA
• Country of Publication: United States
• Language: English

Related Subjects

*HELIUM II-- GROUND STATES
LINEAR MOMENTUM
N66100* --Physics (Low Temperature)--Superfluidity
WAVE FUNCTIONS