Landau parameters for asymmetric nuclear matter with a finite-range density-dependent interaction

Rudra, Nandita; De, J. N.

doi:10.1016/0375-9474(92)90295-u

Cited by 9 publications

(3 citation statements)

References 19 publications

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“…The modified version of this interaction (SBM) is found to reproduce the ground state binding energies, charge rms radii, Giant Monopole Resonance (GMR) energies etc., very well for a host of nuclei from 16 O to very heavy systems [14,22]. The properties of pure neutron matter calculated with this type of interaction is also seen to be in good agreement [23] with those obtained from other sophisticated interactions.…”

Section: A Effective Interactionssupporting

confidence: 71%

Temperature dependence of the symmetry energy of finite nuclei

Samaddar

2012

Phys. Rev. C

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The temperature dependence of the symmetry energy and the symmetry free energy coefficients of atomic nuclei is investigated in a finite temperature Thomas-Fermi framework employing the subtraction procedure. A substantial decrement in the symmetry energy coefficient is obtained for finite systems, contrary to those seen for infinite nuclear matter at normal and somewhat subnormal densities. The effect of the coupling of the surface phonons to the nucleonic motion is also considered; this is found to decrease the symmetry energies somewhat at low temperatures.

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Section: A Effective Interactionssupporting

confidence: 71%

Temperature dependence of the symmetry energy of finite nuclei

Samaddar

2012

Phys. Rev. C

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“…We found that some Gogny functionals, both traditional and modern, can lead to isospin or mechanical instabilities -or, in the case of D1, to both. Although this happens at densities beyond those of interest for nuclear physics, the existence and characterisation of these instabilities has only been attempted in a rather generic way [48,66,79]. In particular, the momentum dependence of these instabilities is relevant for Gogny functionals [80].…”

Section: Discussionmentioning

confidence: 99%

Isovector properties of the Gogny interaction

Sellahewa

Rios

2014

Phys. Rev. C

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We analyse the properties of the Gogny interaction in homogeneous matter, with special emphasis on the isovector sector. We provide analytical expressions for both the single-particle and the bulk properties of symmetric and asymmetric nuclear matter. We perform an extensive analysis of these properties using 11 parametrizations extracted from the literature. We find that most Gogny interactions have low values for the slope of the symmetry energy, outside the range of empirically extracted values. As a test of extreme isospin dependence, we also study the neutron star massradius relations implied by the different Gogny equations of state. Our results call for a more careful fitting procedure of the isovector properties of Gogny functionals.

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“…[12] and [33] suggests that the present interaction can be extrapolated with some confidence to neutron matter or to nuclear matter with large isospin asymmetry at high densities. It can also be mentioned that such an interaction satisfies the Landau-Migdal stability criteria [34].…”

Section: Merits and Limitationsmentioning

confidence: 99%

Spin polarised nuclear matter and its application to neutron stars

Maheswari

Basu

et al. 1997

Nuclear Physics A

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An equation of state(EOS) of nuclear matter with explicit inclusion of a spin-isospin dependent force is constructed from a finite range, momentum and density dependent effective interaction. This EOS is found to be in good agreement with those obtained from more sophisticated models for unpolarised nuclear matter. Introducing spin degrees of freedom, it is found that at density about 2.5 times the density of normal nuclear matter the neutron matter undergoes a ferromagnetic transition. The maximum mass and the radius of the neutron star agree favourably with the observations. Since finding quark matter rather than spin polarised nuclear matter at the core of neutron stars is more probable, the proposed EOS is also applied to the study of hybrid stars. It is found using the bag model picture that one can in principle describe both the mass and size as well as the surface magnetic field of hybrid stars satisfactorily.Comment: 26 pages, 11 figures available on reques

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Landau parameters for asymmetric nuclear matter with a finite-range density-dependent interaction

Cited by 9 publications

References 19 publications

Temperature dependence of the symmetry energy of finite nuclei

Temperature dependence of the symmetry energy of finite nuclei

Isovector properties of the Gogny interaction

Spin polarised nuclear matter and its application to neutron stars

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