Structure of the vacuum in nuclear matter: a nonperturbative approach

We compute the vacuum polarization correction to the binding energy of nuclear matter in the Walecka model using a nonperturbative approach. We first study such a contribution as arising from a ground-state structure wit
We compute the vacuum polarization correction to the binding energy of nuclear matter in the Walecka model using a nonperturbative approach. We first study such a contribution as arising from a ground-state structure with baryon-antibaryon condensates. This yields the same results as obtained through the relativistic Hartree approximation of summing tadpole diagrams for the baryon propagator. Such a vacuum is then generalized to include quantum effects from meson fields through scalar-meson condensates which amounts to summing over a class of multiloop diagrams. The method is applied to study properties of nuclear matter and leads to a softer equation of state giving a lower value of the incompressibility than would be reached without quantum effects. The density-dependent effective sigma mass is also calculated including such vacuum polarization effects.
show moreshow less

Download full text files

Export metadata

  • Export Bibtex
  • Export RIS
Metadaten
Author:Amruta Mishra, P. K. Panda, Stefan Schramm, Joachim Reinhardt, Walter Greiner
URN:urn:nbn:de:hebis:30-30118
DOI:http://dx.doi.org/10.1103/PhysRevC.56.1380
ISSN:1089-490X
ISSN:2469-9993
ISSN:2469-9985
ISSN:0556-2813
Parent Title (English):Physical review. C, Nuclear physics
Publisher:Inst.
Place of publication:Woodbury, NY
Document Type:Article
Language:English
Year of Completion:1997
Date of first Publication:1997/02/03
Publishing Institution:Universitätsbibliothek Johann Christian Senckenberg
Release Date:2006/07/14
Volume:3.Ser. 56
Issue:3
Pagenumber:9
First Page:1380
Last Page:1388
Note:
©1997 American Physical Society
Source:Physical Review C 56(3), S. 1380-1388 (1997), ©1997 The American Physical Society, http://link.aps.org/abstract/PRC/v56/p1380
HeBIS PPN:266047106
Institutes:Physik
Dewey Decimal Classification:530 Physik
PACS-Classification:21.30.-x Nuclear forces (see also 13.75.Cs Nucleon-nucleon interactions)
Sammlungen:Universitätspublikationen
Licence (German):License Logo Veröffentlichungsvertrag für Publikationen

$Rev: 11761 $