Integrability and exact spectrum of a pairing model for nucleons
Loading...
Date
Journal Title
Journal ISSN
Volume Title
Publisher
Abstract
Description
A pairing model for nucleons, introduced by Richardson in 1966, which describes proton-neutron pairing as well as proton-proton and neutron-neutron pairing, is re-examined in the context of the Quantum Inverse Scattering Method. Specifically, this shows that the model is integrable by enabling the explicit construction of the conserved operators. We determine the eigenvalues of these operators in terms of the Bethe ansatz, which in turn leads to an expression for the energy eigenvalues of the Hamiltonian.
14 pages, latex, no figures
14 pages, latex, no figures