Eur. Phys. J. A 15, 421-427 (2002)
DOI: 10.1140/epja/i2002-10080-2

Short Note

Momentum distribution of relativistic nuclei with Hartree-Fock mesonic correlations

J.E. Amaro¹, M.B. Barbaro^{2, 3}, J.A. Caballero³, T.W. Donnelly⁴ and A. Molinari<sup>2

1</sup>  Departamento de Física Moderna, Universidad de Granada, E-18071 Granada, Spain
²  Dipartimento di Fisica Teorica, Università di Torino and INFN, Sezione di Torino, Via P. Giuria 1, 10125 Torino, Italy
³  Departamento de Física Atómica, Molecular y Nuclear Universidad de Sevilla, Apdo. 1065, E-41080 Sevilla, Spain
⁴  Center for Theoretical Physics, Laboratory for Nuclear Science and Department of Physics Massachusetts Institute of Technology, Cambridge, MA 02139, USA

juan@nucle.us.es

(Received: 7 June 2002 / Revised version: 9 September 2002 / Published online: 10 December 2002)

Abstract
The impact of Hartree-Fock correlations on the nuclear momentum distribution is studied in a fully relativistic one-boson-exchange model. Hartree-Fock equations are exactly solved to first order in the coupling constants. The renormalization of the Dirac spinors in the medium is shown to affect the momentum distribution, as opposed to what happens in the non-relativistic case. The unitarity of the model is shown to be preserved by the present renormalization procedure.

PACS
21.60.Jz - Hartree-Fock and random-phase approximations.
21.65.+f - Nuclear matter.
24.10.Jv - Relativistic models.
11.10.Gh - Renormalization.

© Società Italiana di Fisica, Springer-Verlag 2002