New relativistic mean-field interaction with density-dependent meson-nucleon couplings

Lalazissis, G. A.; Nikšić, Tamara; Vretenar, Dario; Ring, P.

doi:10.1103/physrevc.71.024312

Cited by 804 publications

(1,019 citation statements)

References 41 publications

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“…The RQRPA equations are formulated in the canonical single-nucleon basis of the RHB model, by employing effective Lagrangians with density-dependent meson-nucleon couplings [32] in the particle-hole channel and the finite-range Gogny interaction [34] in the pairing channel. The present calculation of the isoscalar monopole response is carried out using the density-dependent meson-exchange effective Lagrangian DD-ME2 [35].…”

Section: Quasiparticle Random Phase Approximationmentioning

confidence: 99%

Incompressibility of finite fermionic systems: Stable and exotic atomic nuclei

et al. 2013

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The incompressibility of finite fermionic systems is investigated using analytical approaches and microscopic models. The incompressibility of a system is directly linked to the zero-point kinetic energy of constituent fermions, and this is a universal feature of fermionic systems. In the case of atomic nuclei, this implies a constant value of the incompressibility in medium-heavy and heavy nuclei. The evolution of nuclear incompressibility along Sn and Pb isotopic chains is analyzed using global microscopic models, based on both nonrelativistic and relativistic energy functionals. The result is an almost constant incompressibility in stable nuclei and systems not far from stability and a steep decrease in nuclei with pronounced neutron excess, caused by the emergence of a soft monopole mode in neutron-rich nuclei.

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Section: Quasiparticle Random Phase Approximationmentioning

confidence: 99%

Incompressibility of finite fermionic systems: Stable and exotic atomic nuclei

et al. 2013

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“…(It has, however, recently been shown that the SkP Skyrme model may diverge for some nuclei if calculated to sufficient accuracy [53]). The third self-consistent mean field model considered here belongs to the framework of the relativistic mean field theory (RMF) with the recent DD-ME2 parametrization of the effective interaction [54]. Although in fitting the DD-ME2 parameters the 208 Pb r np value (of 0.20 fm) was used to adjust the interaction parameters, the shape of the neutron distribution was obtained from the calculation.…”

Section: Calculated Mean Field Neutron and Proton Distributionsmentioning

confidence: 99%

Neutron density distributions from antiprotonicPb208andBi209

Kłos¹,

et al. 2007

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The x-ray cascade from antiprotonic atoms was studied for 208 Pb and 209 Bi. Widths and shifts of the levels due to the strong interaction were determined. Using modern antiproton-nucleus optical potentials, the neutron densities in the nuclear periphery were deduced. Assuming two-parameter Fermi distributions (2pF) describing the proton and neutron densities, the neutron rms radii were deduced for both nuclei. The difference of neutron and proton rms radii r np equal to 0.16 ± (0.02) stat ± (0.04) syst fm for 208 Pb and 0.14 ± (0.04) stat ± (0.04) syst fm for 209 Bi were determined, and the assigned systematic errors are discussed. The r np values and the deduced shapes of the neutron distributions are compared with mean field model calculations.

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“…In this work, we adopt DD-ME2 [29] for the effective interactions between nucleons. The density dependence of coupling constants are obtained based on the Typel-Wolter ansatz [30].…”

Section: Formulationmentioning

confidence: 99%

Nuclear Matter, Quarkyonic Matter, and Phase Transitions in Hybrid Stars

Xia

Xue

Zhou

2018

Proceedings of the Workshop on Quarks and Compact Stars 2017 (QCS2017)

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We extend the relativistic mean field (RMF) model for hadronic matter to include quark degrees of freedom. In the quarkyonic phase, quarks are treated as quasi-free particles with density dependent masses, where both confinement and leading-order perturbative interactions are included. The effects of Pauli blocking and interactions between quarks and baryons are treated with phenomenenlogical approaches. Nuclear matter, quarkyonic matter and transitions between them are investigated with the extended RMF model. Two types of phase transitions are obtained, one is of first-order and the other of third-order. With the model parameters determined according to the observational masses of pulsars, it is found that the quarkyonic transition is likely to be third-order.

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New relativistic mean-field interaction with density-dependent meson-nucleon couplings

Cited by 804 publications

References 41 publications

Incompressibility of finite fermionic systems: Stable and exotic atomic nuclei

Incompressibility of finite fermionic systems: Stable and exotic atomic nuclei

Neutron density distributions from antiprotonicPb208andBi209

Nuclear Matter, Quarkyonic Matter, and Phase Transitions in Hybrid Stars

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