A synthetic electric force acting on neutral atoms

Details A synthetic electric force acting on neutral atoms A synthetic electric force acting on neutral atoms

2010-08-28

arxiv.org/abs/1008.4864v1

Physics

Condensed Matter

Quantum Gases

Scientific paper

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. We experimentally produce a synthetic gauge field that 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. We have generated a synthetic electric field through the time dependence of an effective vector potential, a physical consequence even though the vector potential is spatially uniform.

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