Relativistic BUU approach with momentum-dependent mean fields

Maruyama, Tomoyuki; Blättel, Bernard; Cassing, W.; Lang, Andreas; Mosel, U.; Weber, Klaus

doi:10.1016/0370-2693(92)91253-6

Cited by 29 publications

(30 citation statements)

References 20 publications

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“…These results provide important constraints on the high energy behavior of the nuclear symmetry potential in asymmetric nuclear matter, which is an important input to the isospin-dependent transport model [48,6] for studying heavy-ion collisions induced by radioactive nuclei at intermediate and high energies. They are also useful in future studies that extend the Lorentz-covariant transport model [261][262][263][264] to include explicitly the isospin degrees of freedom.…”

Section: The Nuclear Symmetry Potentialmentioning

confidence: 99%

Recent progress and new challenges in isospin physics with heavy-ion reactions

2008

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The ultimate goal of studying isospin physics via heavy-ion reactions with neutron-rich, stable and/or radioactive nuclei is to explore the isospin dependence of in-medium nuclear effective interactions and the equation of state of neutron-rich nuclear matter, particularly the isospin-dependent term in the equation of state, i.e., the density dependence of the symmetry energy. Because of its great importance for understanding many phenomena in both nuclear physics and astrophysics, the study of the density dependence of the nuclear symmetry energy has been the main focus of the intermediate-energy heavy-ion physics community during the last decade, and significant progress has been achieved both experimentally and theoretically. In particular, a number of phenomena or observables have been identified as sensitive probes to the density dependence of the nuclear symmetry energy. Experimental studies have confirmed some of these interesting isospin-dependent effects and allowed us to constrain relatively stringently the symmetry energy at sub-saturation densities. The impacts of this constrained density dependence of the symmetry energy on the properties of neutron stars have also been studied, and they were found to be very useful for the astrophysical community. With new opportunities provided by the various radioactive beam facilities being constructed around the world, the study of isospin physics is expected to remain one of the forefront research areas in nuclear physics. In this report, we review the major progress achieved during the last decade in isospin physics with heavy ion reactions and discuss future challenges to the most important issues in this field.Key words: Equation of state of asymmetric nuclear matter, Nuclear symmetry energy, Heavy-ion reactions with neutron-rich nuclei, Neutron skin thickness of heavy nuclei, Neutron stars Constraining the Skyrme effective interactions and the neutron skin thickness of heavy nuclei using terrestrial nuclear laboratory data 216 8

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Section: The Nuclear Symmetry Potentialmentioning

confidence: 99%

Recent progress and new challenges in isospin physics with heavy-ion reactions

2008

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“…A great deal of work has been done within the framework of QHD using relativistic transport theory to describe heavy-ion collisions. For example, the foundations of relativistic transport theory are discussed in [Ko87,Bl88a,Ko88,Li89a,La90,Ma92,Ma93,Mo94,Sc94] and further developed in [De91,De92a,Me93,Ni93,Mr94,Fu95a,Po95]. In this section, we start the discussion with a simple introduction to transport theory.…”

Section: Matter Under Extreme Conditions a Relativistic Transport Thmentioning

confidence: 99%

“…A covariant Boltzmann-UehlingUhlenbeck (BUU) approach, the basic ideas of which have been presented above, is developed in [Bl88a,La90,Ma92,Ma94a] and applied in [Bl89,Bl91,Ko90,Ko91]. Relativistic transport coefficients are discussed in [Ha93b,Ay94,Mo94].…”

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confidence: 99%

Recent Progress in Quantum Hadrodynamics

Serot

Walecka

1997

Int. J. Mod. Phys. E

991

1,511

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Quantum hadrodynamics (QHD) is a framework for describing the nuclear many-body problem as a relativistic system of baryons and mesons. Motivation is given for the utility of such an approach and for the importance of basing it on a local, Lorentz-invariant lagrangian density. Calculations of nuclear matter and finite nuclei in both renormalizable and nonrenormalizable, effective QHD models are discussed. Connections are made between the effective and renormalizable models, as well as between relativistic mean-field theory and more sophisticated treatments. Recent work in QHD involving nuclear structure, electroweak interactions in nuclei, relativistic transport theory, nuclear matter under extreme conditions, and the evaluation of loop diagrams is reviewed.

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“…We make parametrization of the nucleon mean-fields to reproduce the nuclear properties, the binding energy, 16 MeV, the nuclear effective mass, M * /M = 0.65, and the incompressibility, K = 250 MeV at the saturation density ρ 0 = 0.17fm −3 . In the heavy-ion experiment analysis [11] the EOS with M * /M = 0.65 and K = 200 − 400MeV reproduce the results of the transverse flow and the subthreshold K + production experiments simultaneously. In the analysis of the data, one needs to consider momentum-dependence in the RMF approach but it does not largely affect the baryon matter properties because it affects observables above a few hundred MeV per nucleon energy region.…”

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confidence: 57%