Selecting microscopic equations of state

Taranto, G.; Baldo, M.; Burgio, G. F.

doi:10.1103/physrevc.87.045803

Cited by 68 publications

(82 citation statements)

References 71 publications

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“…4 with constraints from a recent analysis of isobaric analog states (IAS) and including the constraints from neutron skins (IAS + skins) [42], showing a remarkable agreement over the entire density range. In addition, we show E sym obtained from microscopic calculations performed with a variational approach (Akmal et al (1998)) [40] and at the Brueckner-Hartree-Fock level (BHF) [41]. Both calculations are based on the Argonne v 18 NN and Urbana UIX 3N potentials (with different parameters adjusted to the empirical saturation point), but derive E sym from symmetric and pure neutron matter using the quadratic expansion (13).…”

Section: A Energy Of Asymmetric Nuclear Mattermentioning

confidence: 99%

Microscopic calculations and energy expansions for neutron-rich matter

2014

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We investigate asymmetric nuclear matter with two-and three-nucleon interactions based on chiral effective field theory, where three-body forces are fit only to light nuclei. Focusing on neutron-rich matter, we calculate the energy for different proton fractions and include estimates of the theoretical uncertainty. We use our ab-initio results to test the quadratic expansion around symmetric matter with the symmetry energy term, and confirm its validity for highly asymmetric systems. Our calculations are in remarkable agreement with an empirical parametrization for the energy density. These findings are very useful for astrophysical applications and for developing new equations of state.

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Section: A Energy Of Asymmetric Nuclear Mattermentioning

confidence: 99%

Microscopic calculations and energy expansions for neutron-rich matter

2014

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“…Taranto et al [35] have recently tested five such models for their consistency with known astrophysics and nuclear physics constraints. They came up with open questions concerning the predictions for high densities (ρ > 3ρ 0 ) that one needs to know in compact star modeling.…”

Section: Comparison To Microscopic Calculationsmentioning

confidence: 99%

Constraining the nuclear matter equation of state around twice saturation density

et al. 2016

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Using FOPI data on elliptic flow in Au+Au collisions between 0.4 and 1.5A GeV we extract constraints for the equation of state (EOS) of compressed symmetric nuclear matter using the transport code IQMD by introducing an observable describing the evolution of the size of the elliptic flow as a function of rapidity. This observable is sensitive to the nuclear EOS and a robust tool to constrain the compressibility of nuclear matter up to 2 ρ 0 .

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“…Hartree-Fock (BHF) approach [15][16][17] and chiral effective field theory [18]. These calculations predict a relatively narrow band compared to the data extracted from the isobaric analog states experiments below the saturation density, but divergence emerges at higher densities.…”

Section: Introductionmentioning

confidence: 95%

Kinetic and potential parts of nuclear symmetry energy: the role of Fock terms

Zhao

Sun

Long

2015

J. Phys. G: Nucl. Part. Phys.

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The isospin coupling-channel decomposition of the potential energy density functional is carried out within the covariant density functional (CDF) theory, and their isospin and density dependence in particular the influence on the symmetry energy is studied. It is found that both isospin-singlet and isospin-triplet components of the potential energy play the dominant role in deciding the symmetry energy, especially when the Fock diagram is introduced. The results illustrate a quite different mechanism to the origin of the symmetry energy from the microscopic Brueckner-Hartree-Fock theory, and demonstrate the importance of the Fork diagram in the CDF theory, especially from the isoscalar mesons, in the isospin properties of the in-medium nuclear force at high density.

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Selecting microscopic equations of state

Cited by 68 publications

References 71 publications

Microscopic calculations and energy expansions for neutron-rich matter

Microscopic calculations and energy expansions for neutron-rich matter

Constraining the nuclear matter equation of state around twice saturation density

Kinetic and potential parts of nuclear symmetry energy: the role of Fock terms

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