Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1126/science.aau4402 |
Quantum scale anomaly and spatial coherence in a 2D Fermi superfluid | |
Murthy, Puneet A.1,3; Defenu, Nicolo2; Bayha, Luca1; Holten, Marvin1; Preiss, Philipp M.1; Enss, Tilman2; Jochim, Selim1 | |
2019-07-19 | |
发表期刊 | SCIENCE |
ISSN | 0036-8075 |
EISSN | 1095-9203 |
出版年 | 2019 |
卷号 | 365期号:6450页码:268-+ |
文章类型 | Article |
语种 | 英语 |
国家 | Germany; Switzerland |
英文摘要 | Quantum anomalies are violations of classical scaling symmetries caused by divergences that appear in the quantization of certain classical theories. Although they play a prominent role in the quantum field theoretical description of many-body systems, their influence on experimental observables is difficult to discern. In this study, we discovered a distinctive manifestation of a quantum anomaly in the momentum-space dynamics of a two-dimensional (2D) Fermi superfluid of ultracold atoms. The measured pair momentum distributions of the superfluid during a breathing mode cycle exhibit a scaling violation in the strongly interacting regime. We found that the power-law exponents that characterize long-range phase correlations in the system are modified by the quantum anomaly, emphasizing the influence of this effect on the critical properties of 2D superfluids. |
领域 | 地球科学 ; 气候变化 ; 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000476479200050 |
WOS关键词 | BOSE-EINSTEIN CONDENSATION |
WOS类目 | Multidisciplinary Sciences |
WOS研究方向 | Science & Technology - Other Topics |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/201898 |
专题 | 地球科学 资源环境科学 气候变化 |
作者单位 | 1.Heidelberg Univ, Phys Inst, Heidelberg, Germany; 2.Heidelberg Univ, Inst Theoret Phys, Heidelberg, Germany; 3.Swiss Fed Inst Technol, Inst Quantum Elect, Zurich, Switzerland |
推荐引用方式 GB/T 7714 | Murthy, Puneet A.,Defenu, Nicolo,Bayha, Luca,et al. Quantum scale anomaly and spatial coherence in a 2D Fermi superfluid[J]. SCIENCE,2019,365(6450):268-+. |
APA | Murthy, Puneet A..,Defenu, Nicolo.,Bayha, Luca.,Holten, Marvin.,Preiss, Philipp M..,...&Jochim, Selim.(2019).Quantum scale anomaly and spatial coherence in a 2D Fermi superfluid.SCIENCE,365(6450),268-+. |
MLA | Murthy, Puneet A.,et al."Quantum scale anomaly and spatial coherence in a 2D Fermi superfluid".SCIENCE 365.6450(2019):268-+. |
条目包含的文件 | 条目无相关文件。 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。
修改评论