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Optimized delta expansion for relativistic nuclear models

G. Krein·R. S. Marques de Carvalho·D. P. Menezes·M. Nielsen·M. B. Pinto
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Abstract

The optimized $δ$-expansion is a nonperturbative approach for field theoretic models which combines the techniques of perturbation theory and the variational principle. This technique is discussed in the $λϕ^4$ model and then implemented in the Walecka model for the equation of state of nuclear matter. The results obtained with the $δ$ expansion are compared with those obtained with the traditional mean field, relativistic Hartree and Hartree-Fock approximations.

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G. Krein, R. S. Marques de Carvalho, D. P. Menezes, M. Nielsen, M. B. Pinto. 1997-09-24. Optimized delta expansion for relativistic nuclear models. https://doi.org/10.1007/s100500050030

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