Yrast Line for Weakly Interacting Trapped Bosons

Journal Article · Mon Dec 27 00:00:00 EST 1999 · Physical Review Letters

DOI:https://doi.org/10.1103/PhysRevLett.83.5412· OSTI ID:20215110

Bertsch, George F; Papenbrock, Thomas

We compute numerically the yrast line for harmonically trapped N -boson systems with a weak repulsive contact interaction, studying the transition to a vortex state as the angular momentum L increases and approaches N . There is a smooth crossover between low and high L with no indication of a quantum phase transition; at L=N there is a kink in the slope of the spectrum. Most strikingly, the energy and wave function appear to be analytical functions of L over the entire range 2{<=}L{<=}N . We confirm the structure of low-L states proposed by Mottelson as mainly single-particle excitations with two or three units of angular momentum. (c) 1999 The American Physical Society.

• OSTI ID: 20215110
• Journal Information: Physical Review Letters, Vol. 83, Issue 26; Other Information: PBD: 27 Dec 1999; ISSN 0031-9007
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
BOSONS
TRAPPING
YRAST STATES
ANGULAR MOMENTUM
EIGENSTATES
BOSE-EINSTEIN CONDENSATION
WAVE FUNCTIONS
THEORETICAL DATA