Radiatively induced non linearity in the Walecka model
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| Format: | Artículo científico |
| Language: | en |
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Sociedade Brasileira de Física
2010
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| _version_ | 1876467742516707328 |
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| author | Rafael Cavagnoli |
| author_facet | Rafael Cavagnoli |
| contents | Radiatively induced non linearity in the Walecka model Rafael Cavagnoli Marcus Benghi Pinto Física, Astronomía y Matemáticas Walecka model Nuclear matter Renormalization Finite densities Vacuum corrections We evaluate the effective potential for the conventional linear Walecka non perturbatively up to one loop. This quantity is then renormalized with a prescription which allows finite vacuum contributions to the three as well as four 1PI Green's functions to survive. These terms, which are absent in the standard relativistic Hartree approximation, have a logarithmic energy scale dependence that can be tuned so as to mimic the effects of ø³ and ø4 type of terms present in the non linear Walecka model improving quantities such as the compressibility modulus and the effective nucleon mass, at saturation, by considering energy scales which are very close to the nucleon mass at vanishing density. 2010 artículo científico 0103-9733 https://www.redalyc.org/articulo.oa?id=46415799014 en http://www.redalyc.org/revista.oa?id=464 Brazilian Journal of Physics application/pdf Sociedade Brasileira de Física Brazilian Journal of Physics (Brasil) Num.4 Vol.40 |
| format | Artículo científico |
| id | redalyc_46415799014 |
| institution | Redalyc |
| language | en |
| publishDate | 2010 |
| publisher | Sociedade Brasileira de Física |
| spellingShingle | Radiatively induced non linearity in the Walecka model Rafael Cavagnoli Física, Astronomía y Matemáticas Walecka model Nuclear matter Renormalization Finite densities Vacuum corrections Radiatively induced non linearity in the Walecka model Rafael Cavagnoli Marcus Benghi Pinto Física, Astronomía y Matemáticas Walecka model Nuclear matter Renormalization Finite densities Vacuum corrections We evaluate the effective potential for the conventional linear Walecka non perturbatively up to one loop. This quantity is then renormalized with a prescription which allows finite vacuum contributions to the three as well as four 1PI Green's functions to survive. These terms, which are absent in the standard relativistic Hartree approximation, have a logarithmic energy scale dependence that can be tuned so as to mimic the effects of ø³ and ø4 type of terms present in the non linear Walecka model improving quantities such as the compressibility modulus and the effective nucleon mass, at saturation, by considering energy scales which are very close to the nucleon mass at vanishing density. 2010 artículo científico 0103-9733 https://www.redalyc.org/articulo.oa?id=46415799014 en http://www.redalyc.org/revista.oa?id=464 Brazilian Journal of Physics application/pdf Sociedade Brasileira de Física Brazilian Journal of Physics (Brasil) Num.4 Vol.40 |
| title | Radiatively induced non linearity in the Walecka model |
| topic | Física, Astronomía y Matemáticas Walecka model Nuclear matter Renormalization Finite densities Vacuum corrections |
| url | https://www.redalyc.org/articulo.oa?id=46415799014 |