Three-body force effect on nucleon momentum distributions in asymmetric nuclear matter within the framework of the extended Brueckner-Hartree-Fock approach

Yin, Peng; Li, J. Y.; Wang, Pei; Zuo, Wei

doi:10.1103/physrevc.87.014314

Cited by 40 publications

(40 citation statements)

References 76 publications

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“…Then using the predicted value of ∆ 0 ≈ 0.88 ± 0.03 [9,22,23] and the experimental value of x HMT SNM ≈ 0.28 ± 0.04, the value of β 0 is estimated to be about −0.27 ± 0.08. Similarly, the condition depends on the less constrained value of β 1 .…”

Section: Corrections Due To the Momentum-dependent Depletion Of Thmentioning

confidence: 96%

Isospin quartic term in the kinetic energy of neutron-rich nucleonic matter

Cai

2015

Phys. Rev. C

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The energy of a free gas of neutrons and protons is well known to be approximately isospin parabolic with a negligibly small quartic term of only 0.45 MeV at the saturation density of nuclear matter ρ0 = 0.16 fm −3 . Using an isospin-dependent single-nucleon momentum distribution including a high (low) momentum tail (depletion) with its shape parameters constrained by recent high-energy electron scattering and medium-energy nuclear photodisintegration experiments as well as the stateof-the-art calculations of the deuteron wave function and the equation of state of pure neutron matter near the unitary limit within several modern microscopic many-body theories, we show for the first time that the kinetic energy of interacting nucleons in neutron-rich nucleonic matter has a significant quartic term of 7.18 ± 2.52 MeV. Such a large quartic term has broad ramifications in determining the equation of state of neutron-rich nucleonic matter using observables of nuclear reactions and neutron stars.

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Section: Corrections Due To the Momentum-dependent Depletion Of Thmentioning

confidence: 96%

Isospin quartic term in the kinetic energy of neutron-rich nucleonic matter

Cai

2015

Phys. Rev. C

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“…In Fig. 5 are plotted the proton and neutron momentum distributions at zero momentum vs. asymmetry β in the two cases with and without including the TBF [18]. It is seen that increasing the asymmetry β enhances the depletion of the proton Fermi sea, while it reduces the depletion of the neutron Fermi sea.…”

Section: Resultsmentioning

confidence: 94%

Properties of Asymmetric Nuclear Matter

Zuo

2018

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

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We give a review of our investigation on the single-particle properties and the equation of state (EOS) of asymmetric nuclear matter within the framework of the Brueckner theory extended to include a microscopic three-body force. Especially, we discuss the three-body force effect. It is shown the three-body force is crucial for reproducing the empirical saturation properties within nonrelativistic microscopic frameworks and may enhance strongly the stiffness of symmetry energy at high densities. As for the single particle properties, the three-body force turns out to induces a strongly repulsive and momentum-dependent rearrangement contribution to the single particle potential and enhances significantly the depletion of nuclear Fermi sea, at high densities.

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“…Fig. 1 shows nucleon initial momentum distri- bution with high-momentum tail in 197 Au, which is given by the extended brueckner-hartree-fock (BHF) approach by adopting the AV 18 two-body interaction plus a microscopic three-body-force (TBF) [35]. The instability of initial colliding nuclei including the HMT has negligible effects on our studies here.…”

Section: The Ibuu Transport Modelmentioning

confidence: 99%

Effects of the high-momentum tail of nucleon momentum distribution on the isospin-sensitive observables

Zhang

Yong

2016

Eur. Phys. J. A

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Based on the Isospin-dependent transport model Boltzmann-Uehling-Uhlenbeck (IBUU), effects of the high momentum tail (HMT) of nucleon momentum distribution in colliding nuclei on some isospin-sensitive observables are studied in the semi-central 197 Au+ 197 Au reactions at incident beam energy of 400 MeV/nucleon. It is found that the nucleon transverse flow, the difference of neutron and proton transverse flows, the nucleon elliptic flow and free neutron to proton ratio are all less sensitive to the HMT, while the isospin-sensitive nucleon elliptic flow difference is clearly affected by the HMT. Except at very high kinetic energies, the kinetic energy distributions of π − , π + and charged pion ratio π − /π + are all sensitive to the HMT.

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Three-body force effect on nucleon momentum distributions in asymmetric nuclear matter within the framework of the extended Brueckner-Hartree-Fock approach

Cited by 40 publications

References 76 publications

Isospin quartic term in the kinetic energy of neutron-rich nucleonic matter

Isospin quartic term in the kinetic energy of neutron-rich nucleonic matter

Properties of Asymmetric Nuclear Matter

Effects of the high-momentum tail of nucleon momentum distribution on the isospin-sensitive observables

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