Equation of state of hadronic matter with dibaryons in an effective quark model

Details Equation of state of hadronic matter with dibaryons in an effective quark model Equation of state of hadronic matter with dibaryons in an effective quark model

1998-06-17

arxiv.org/abs/nucl-th/9806048v2

Phys.Lett. B449 (1999) 161-167

Physics

Nuclear Physics

Nuclear Theory

9 pages, LaTex, 3 Postscript figures, a misprint corrected

Scientific paper

10.1016/S0370-2693(99)00049-0

The equation of state of symmetric nuclear matter with the inclusion of non-strange dibaryons is studied. We pay special attention to the existence of a dibaryon condensate at zero temperature. These calculations have been performed in an extended quark-meson coupling model with density-dependent parameters, which takes into account the finite size of nucleons and dibaryons. A first-order phase-transition to pure dibaryon matter has been found. The corresponding critical density is strongly dependent on the value of the dibaryon mass. The density behavior of the nucleon and dibaryon effective masses and confining volumes have also been discussed.

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