抄録
The Hugenholtz-Pines (HP) theorem is derived for Bose-Einstein condensates (BECs) with internal degrees of freedom. The low-energy Ward-Takahashi identity is provided in the system with the linear and quadratic symmetry breaking terms. This identity serves to organize the HP theorem for multicomponent BECs, such as the binary BEC as well as the spin-f spinor BEC in the presence of a magnetic field with broken U(1)×SO(3) symmetry. The experimental method based on the Stern-Gerlach experiment is proposed for studying the Ward-Takahashi identity.
| 本文言語 | English |
|---|---|
| 論文番号 | 053307 |
| ジャーナル | Physical Review A |
| 巻 | 103 |
| 号 | 5 |
| DOI | |
| 出版ステータス | Published - 2021 5月 |
| 外部発表 | はい |
ASJC Scopus subject areas
- 原子分子物理学および光学