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Majorana spin-flip transitions in a magnetic trap

D. M. Brink·C. V. Sukumar
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Abstract

Atoms confined in a magnetic trap can escape by making spin-flip Majorana transitions due to a breakdown of the adiabatic approximation. Several papers have studied this process for atoms with spin $F = 1/2$ or $F= 1$. The present paper calculates the escape rate for atoms with spin $F > 1$. This problem has new features because the perturbation $ΔT$ which allows atoms to escape satisfies a selection rule $ΔF_z = 0, \pm 1, \pm 2$ and multi-step processes contribute in leading order. When the adiabatic approximation is satisfied the leading order terms can be summed to yield a simple expression for the escape rate.

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D. M. Brink, C. V. Sukumar. 2006-10-17. Majorana spin-flip transitions in a magnetic trap. https://doi.org/10.1103/physreva.74.035401

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