Abstract
An operator-algebraic approach to analyze the yrast spectrum of weakly interacting bosons is proposed. The basic idea is to exploit the macroscopic occupation of a particular mode to rewrite the second-quantized interaction Hamiltonian under the restriction of the total particle-number conservation and the angular-momentum conservation. Analytically, it is shown that the lowest-lying excitation spectrum from the yrast line is given by 27gn3(n3-1)/34.
| Original language | English |
|---|---|
| Article number | 063609 |
| Pages (from-to) | 63609/1-63609/7 |
| Journal | Physical Review A. Atomic, Molecular, and Optical Physics |
| Volume | 64 |
| Issue number | 6 |
| Publication status | Published - 2001 Jan 1 |
ASJC Scopus subject areas
- Atomic and Molecular Physics, and Optics