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Solutions of the Bohr Hamiltonian, a compendium

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Abstract.

The Bohr Hamiltonian, also called collective Hamiltonian, is one of the cornerstones of nuclear physics and a wealth of solutions (analytic or approximated) of the associated eigenvalue equation have been proposed over more than half a century (confining ourselves to the quadrupole degree of freedom). Each particular solution is associated with a peculiar form for the V(β,γ) potential. The large number and the different details of the mathematical derivation of these solutions, as well as their increased and renewed importance for nuclear structure and spectroscopy, demand a thorough discussion. It is the aim of the present monograph to present in detail all the known solutions in γ-unstable and γ-stable cases, in a taxonomic and didactical way. In pursuing this task we especially stressed the mathematical side leaving the discussion of the physics to already published comprehensive material. The paper contains also a new approximate solution for the linear potential, and a new solution for prolate and oblate soft axial rotors, as well as some new formulae and comments. The quasi-dynamical SO(2) symmetry is proposed in connection with the labeling of bands in triaxial nuclei.

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  1. Vakgroep subatomaire en stralingfysica, Proeftuinstraat 86, B-9000, Ghent, Belgium

    L. Fortunato

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  1. L. Fortunato
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Fortunato, L. Solutions of the Bohr Hamiltonian, a compendium. Eur. Phys. J. A 26 (Suppl 1), 1–30 (2005). https://doi.org/10.1140/epjad/i2005-07-115-8

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