Point-coupling Models from Mesonic Hypermassive Limit and Mean-field Approaches
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Author(s)
Lourenço, O.
Dutra, M.
Delfino, Antonio
Pinto Gurgel Do Amaral, Rubens Luis
Date Issued
March 2012
Journal
Brazilian Journal of Physics
Publisher
Springer-Verlag
Citation
Lourenço, O. et al. “Point-Coupling Models from Mesonic Hypermassive Limit and Mean-Field Approaches.” Brazilian Journal of Physics 42.3–4 (2012): 227–236.
Version
Author's final manuscript
Abstract
In this work, we show how nonlinear point-coupling models, described by a Lagrangian density containing only terms up to fourth order in the fermion condensate ([bar over ψ]ψ), are derived from a modified meson-exchange nonlinear Walecka model. We present two methods of derivation, namely the hypermassive meson limit within a functional integral approach and the mean-field approximation, in which equations of state at zero temperature of the nonlinear point-coupling models are directly obtained.
MIT Department
Massachusetts Institute of Technology. Center for Theoretical Physics
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Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
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DOI of Published Version
https://doi.org/10.1007/s13538-012-0072-3
