期刊
SCIENCE
卷 360, 期 6396, 页码 1429-+出版社
AMER ASSOC ADVANCEMENT SCIENCE
DOI: 10.1126/science.aam9031
关键词
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资金
- U.S. Army Research Office's Atomtronics MURI
- U.S. Air Force Office of Scientific Research's Quantum Matter MURI
- National Institute of Standards and Technology
- NSF through the Physics Frontier Center at the Joint Quantum Institute
- Japan Society for the Promotion of Science
Topological order is often quantified in terms of Chern numbers, each of which classifies a topological singularity. Here, inspired by concepts from high-energy physics, we use quantum simulation based on the spin degrees of freedom of atomic Bose-Einstein condensates to characterize a singularity present in five-dimensional non-Abelian gauge theories-a Yang monopole. We quantify the monopole in terms of Chern numbers measured on enclosing manifolds: Whereas the well-known first Chern number vanishes, the second Chern number does not. By displacing the manifold, we induce and observe a topological transition, where the topology of the manifold changes to a trivial state.
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