| A wavefunction describing superfluidity in a perfect crystal | |
| Zhai, H ; Wu, YS | |
| 2010-05-06 ; 2010-05-06 | |
| 关键词 | Bose Einstein condensation (theory) BOSE-EINSTEIN CONDENSATION HELIUM HE-4 Mechanics Physics, Mathematical |
| 中文摘要 | We propose a many-body wavefunction that exhibits both diagonal and off-diagonal long-range order. Incorporating short-range correlations due to interatomic repulsion, this wavefunction is shown to allow condensation of zero-point lattice vibrations and phase rigidity. In the presence of an external velocity field, such a perfect crystal will develop non-classical rotational inertia, exhibiting supersolid behaviour. In a sample calculation we show that the super fluid fraction in this state can be as large as of order 0.01 in a reasonable range of microscopic parameters. The relevance to the recent experimental evidence of a supersolid state given by Kim and Chan is discussed. |
| 语种 | 英语 ; 英语 |
| 出版者 | IOP PUBLISHING LTD ; BRISTOL ; DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND |
| 内容类型 | 期刊论文 |
| 源URL | [http://hdl.handle.net/123456789/14606]  |
| 专题 | 清华大学 |
| 推荐引用方式 GB/T 7714 | Zhai, H,Wu, YS. A wavefunction describing superfluidity in a perfect crystal[J],2010, 2010. |
| APA | Zhai, H,&Wu, YS.(2010).A wavefunction describing superfluidity in a perfect crystal.. |
| MLA | Zhai, H,et al."A wavefunction describing superfluidity in a perfect crystal".(2010). |
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