期刊
NATURE PHYSICS
卷 7, 期 7, 页码 531-534出版社
NATURE PUBLISHING GROUP
DOI: 10.1038/NPHYS1954
关键词
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资金
- ONR
- ARO
- DARPA
- NSF through the JQI Physics Frontier Center
Electromagnetism is a simple example of a gauge theory where the underlying potentials (the vector and scalar potentials) are defined only up to a gauge choice. The vector potential generates magnetic fields through its spatial variation and electric fields through its time dependence(1). Here, we report experiments in which we have produced a synthetic gauge field. The gauge field emerges only at low energy in a rubidium Bose-Einstein condensate: the neutral atoms behave as charged particles do in the presence of a homogeneous effective vector potential(2). We have generated a synthetic electric field through the time dependence of an effective vector potential, a physical consequence that emerges even though the vector potential is spatially uniform.
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