https://doi.org/10.1140/epjd/s10053-022-00461-z
Regular Article – Cold Matter and Quantum Gases
Toward a measurement of the effective gauge field and the Born–Huang potential with atoms in chip traps
1
College of Engineering and Technology, American University of the Middle East, 54200, Egaila, Kuwait
2
Department of Physics and Astronomy, Uppsala University, Box 516, 751 20, Uppsala, Sweden
3
Department of Applied Physics, Royal Institute of Technology, 106 91, Stockholm, Sweden
4
Aix Marseille Univ, Université de Toulon, CNRS, CPT, IPhU, AMUTech, Marseille, France
5
Centre for Quantum Technologies, National University of Singapore, 2 Science Drive 3, 117542, Singapore, Singapore
Received:
22
March
2022
Accepted:
16
July
2022
Published online:
5
August
2022
We study magnetic traps with very high trap frequencies where the spin is coupled to the motion of the atom. This allows us to investigate how the Born–Oppenheimer approximation fails and how effective magnetic and electric fields appear as the consequence of the non-adiabatic dynamics. The results are based on exact numerical diagonalization of the full Hamiltonian describing the coupling between the internal and external degrees of freedom. The position in energy and the decay rate of the trapping states corresponding to the imaginary part of the resonances of this Hamiltonian are computed using the complex rotation method.
Erik Sjöqvist, Björn Hessmo and Benoît Grémaud are contributed equally to this work.
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