Physics – Nuclear Physics – Nuclear Theory
Scientific paper
2009-04-21
Phys.Rev.C80:025806,2009
Physics
Nuclear Physics
Nuclear Theory
6 pages, 5 figues, 3 tables, accepted for publication in Phys. Rev. C
Scientific paper
10.1103/PhysRevC.80.025806
We study the influence of the isovector-scalar meson on the spinodal instabilities and the distillation effect in asymmetric non-homogenous nuclear matter under strong magnetic fields, of the order of $10^{18}-10^{19}$ G. Relativistic nuclear models both with constant couplings (NLW) and with density dependent parameters (DDRH) are considered. A strong magnetic field can have large effects on the instability regions giving rise to bands of instability and wider unstable regions. It is shown that for neutron rich matter the inclusion of the $\delta$ meson increases the size of the instability region for NLW models and decreases it for the DDRH models. The effect of the $\delta$ meson on the transition density to homogeneous $\beta$-equilibrium matter is discussed. The DDRH$\delta$ model predicts the smallest transition pressures, about half the values obtained for NL$\delta$.
Providencia Constança
Providencia Joao da
Rabhi Abdelali
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