Dirac-Foldy term and the electromagnetic polarizability of the neutron

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dc.creatorBawin, M.
dc.creatorCoon, S. A.
dc.date1996-10-18
dc.date.accessioned2026-07-07T11:10:57Z
dc.date.available2026-07-07T11:10:57Z
dc.descriptionWe reconsider the Dirac-Foldy contribution $μ^2/m$ to the neutron electric polarizability. Using a Dirac equation approach to neutron-nucleus scattering, we review the definitions of Compton continuum ($\barα$), classical static ($α^n_E$), and Schrödinger ($α_{Sch}$) polarizabilities and discuss in some detail their relationship. The latter $α_{Sch}$ is the value of the neutron electric polarizability as obtained from an analysis using the Schrödinger equation. We find in particular $α_{Sch} = \barα - μ^2/m$ , where $μ$ is the magnitude of the magnetic moment of a neutron of mass $m$. However, we argue that the static polarizability $α^n_E$ is correctly defined in the rest frame of the particle, leading to the conclusion that twice the Dirac-Foldy contribution should be added to $α_{Sch}$ to obtain the static polarizability $α^n_E$.
dc.description11 pages, RevTeX, to appear in Physical Review C
dc.identifierhttps://arxiv.org/abs/nucl-th/9610028
dc.identifierhttp://arxiv.org/abs/nucl-th/9610028
dc.identifierPhys.Rev.C55:419-423,1997
dc.identifierdoi:10.1103/PhysRevC.55.419
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/190935
dc.subjectNuclear Theory
dc.subjectHigh Energy Physics - Phenomenology
dc.titleDirac-Foldy term and the electromagnetic polarizability of the neutron
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