Abstract
A model Hamiltonian describing a two-level system with a crossing plus a pairing force is investigated using the technique of large-amplitude collective motion. The collective path, which is determined by the decoupling conditions, is found to be almost identical to the one in the Born-Oppenheimer approximation for the case of a strong pairing force. For the weak pairing case, the obtained path describes a diabatic dynamics of the system.
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This work is supported by EPSRC (UK).
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Nakatsukasa, T., Walet, N.R. Large amplitude collective motion in nuclei and metallic clusters — Applicability of adiabatic theory for a pairing model. Czech J Phys 48, 813–816 (1998). https://doi.org/10.1023/A:1021443217783
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DOI: https://doi.org/10.1023/A:1021443217783