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 |
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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