Rearrangement in the density dependent relativistic field theory of nuclei

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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“…The new term Σ µ(R) in the vector self-energy, which is called the rearrangement self-energy [168,309], is given by…”

Section: The Density-dependent Rmf Modelmentioning

confidence: 99%

“…The rearrangement self-energy plays an essential role in the applications of the theory since it guarantees both the thermodynamical consistency and the energy-momentum conservation [168,309].…”

Section: The Density-dependent Rmf Modelmentioning

confidence: 99%

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

2008

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“…Their interplay is essential to describe the saturation of nuclear matter in the model. RMF models with density-dependent (DD) couplings were first applied to the description of finite nuclei by Fuchs and Lenske [6,7] considering dependencies on vector and scalar densities. The couplings were obtained from microscopic Dirac-Brueckner-Hartree-Fock calculations of nuclear matter.…”

Section: Introductionmentioning

confidence: 99%

Relativistic Mean-Field Models with Different Parametrizations of Density Dependent Couplings

Typel

2018

Particles

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Relativistic mean-field models are successfully used for the description of finite nuclei and nuclear matter. Approaches with density-dependent meson-nucleon couplings assume specific functional forms and a dependence on vector densities in most cases. In this work, parametrizations with a larger sample of functions and dependencies on vector and scalar densities are investigated. They are obtained from fitting properties of finite nuclei. The quality of the description of nuclei and the obtained equations of state of symmetric nuclear matter and neutron matter below saturation are very similar. However, characteristic nuclear matter parameters, the equations of state and the symmetry energy at suprasaturation densities show some correlations with the choice of the density dependence and functional form of the couplings. Conditions are identified that can lead to problems for some of the parametrizations.

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“…Günümüzde lineer olmayan RMF modelinin yanı sıra ω mezonu ve ρ mezonunun öz etkileşmesini dikkate alarak geliştirilen RMF modelleri de bulunmaktadır [30][31][32]. Ayrıca alternatif olarak yoğunluk bağımlı mezonnükleon etkileşmelerini hesaba katan RMF modeli de geliştirilmiştir [33][34][35][36][37]. Bu çalışmada kullanılan RMF modeli son olarak bahsedilen yoğunluk bağımlı RMF modelidir.…”

Section: Yöntemunclassified

124-134Xe Izotopları için Triaxiall RMF Hesaplamaları

Bayram¹,

Akkoyun²,

Şentürk³

2016

CSJ

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Özet. Bu çalışmada çift-çift [124][125][126][127][128][129][130][131][132][133][134] Xe çekirdekleri için Relativistik Ortalama Alan (RMF) Modeli kullanılarak taban durum nükleer özellik hesaplamaları yapılmıştır. Bu çekirdekler için RMF+DDM2 etkileşmesi ile taban durum bağlanma enerjileri için deneysel değerlere çok yakın sonuçlar elde edilmiştir. Triaxiall simetriye dayalı hesaplamalar yapılarak [124][125][126][127][128][129][130][131][132][133][134] Xe izotop zincirinde izotopların taban durum şekilleri üzerine bir analizde sunulmaktadır. Özellikle deneysel olarak 130 Xe çekirdeğinin E(5) simetrisine sahip kritik nokta çekirdeği olduğu iddia edilmektedir. Bu bağlamda Xe izotopları için RMF modeli çerçevesinde elde edilen potansiyel enerji yüzeyleri (PES) kullanılarak E(5) simetrili çekirdek taraması yapılmıştır. Çift-çift [124][125][126][127][128][129][130][131][132][133][134] Xe izotopları için izotop zinciri boyunca şekil evrimi detaylıca tartışılmıştır. Anahtar kelimeler: RMF modeli, Bağlanma enerjisi, Xe izotopları, PES, E(5) simetrisi Triaxiall RMF Calculations for 124-134 Xe IsotopesAbstract. In this study, ground-state nuclear properties of even-even [124][125][126][127][128][129][130][131][132][133][134] Xe nuclei have been calculated by using Relativistic Mean Field (RMF) model. By using RMF+DDM2 interaction the ground-state binding energies of these nuclei have been predicted as very close to experimental values. Also, an analizing on the ground-state shape of [124][125][126][127][128][129][130][131][132][133][134] Xe isotopes is presented by using calculations based on triaxiall symmetry. In particular, 130 Xe nuclei has been pointed out as possible critical point nuclei with E(5) symmetry from experimental studies. For this reason, by using potential energy surfaces (PES) of [124][125][126][127][128][129][130][131][132][133][134] Xe nuclei obtained from RMF model, scanning for E(5) symmetry in this isotopic chain has been done. For even-even 124-134 Xe nuclei, shape evolution has been discussed in detail.

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Rearrangement in the density dependent relativistic field theory of nuclei

Cited by 149 publications

References 23 publications

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

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

Relativistic Mean-Field Models with Different Parametrizations of Density Dependent Couplings

124-134Xe Izotopları için Triaxiall RMF Hesaplamaları

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