Nucleon electric polarizability in soliton models and the role of the seagull terms

Details Nucleon electric polarizability in soliton models and the role of the seagull terms Nucleon electric polarizability in soliton models and the role of the seagull terms

1995-07-18

arxiv.org/abs/hep-ph/9507328v1

Nucl.Phys. A596 (1996) 599-610

Physics

High Energy Physics

High Energy Physics - Phenomenology

LaTeX, 17 pages, no figures

Scientific paper

10.1016/0375-9474(95)00431-9

The full Hamiltonian of the soliton models contains no electric seagull terms. Here it is shown that if one restricts the fields to the collective subspace then electric seagull terms are induced in the effective Hamiltonian. These effective seagull contributions are consistent with gauge invariance. They also reproduce the leading nonanalytic behavior of a large $N_c$ chiral perturbation theory calculation of the electric polarizability.

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