Nuclear matter symmetry energy at<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mn>0.03</mml:mn><mml:mo>⩽</mml:mo><mml:mi>ρ</mml:mi><mml:mo>/</mml:mo><mml:msub><mml:mi>ρ</mml:mi><mml:mn>0</mml:mn></mml:msub><mml:mo>⩽</mml:mo><mml:mn>0.2</mml:mn></mml:mrow></mml:math>

Wada, R.; Hagel, K.; Qin, Lei; Natowitz, J. B.; G., Y.; Röpke, G.; Shlomo, S.; Bonasera, A.; Typel, S.; Chen, Z.; Huang, M.; Wang, J.; Zheng, H.; Kowalski, S.; Bottosso, C.; Barbui, M.; Rodrigues, M. R. D.; Schmidt, K.; Fabris, D.; Lunardon, M.; Moretto, S.; Nebbia, G.; Pesente, S.; Rizzi, V.; Viesti, G.; Cinausero, M.; Prete, G.; Keutgen, T.; Masri, Y. El; Majka, Z.

doi:10.1103/physrevc.85.064618

Cited by 52 publications

(49 citation statements)

References 38 publications

(65 reference statements)

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“…However, going to higher densities, medium effects, in particular the dissolution of bound states, must be included so that a smooth transition to the near-saturation density region is expected, where mean-field approaches can be applied. It has been shown in [118][119][120][121][122] that general expressions for the symmetry energy can be obtained which reproduce the results of experiments at low densities, determined by cluster formation, but agree with mean-field approaches at high densities. A cluster-virial approach may improve the description in the intermediate region.…”

Section: Light Cluster Formation and Symmetry Energy In Low-energy Hementioning

confidence: 82%

Towards a Unified Quark-Hadron-Matter Equation of State for Applications in Astrophysics and Heavy-Ion Collisions

et al. 2018

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Abstract:We outline an approach to a unified equation of state for quark-hadron matter on the basis of a Φ−derivable approach to the generalized Beth-Uhlenbeck equation of state for a cluster decomposition of thermodynamic quantities like the density. To this end we summarize the cluster virial expansion for nuclear matter and demonstrate the equivalence of the Green's function approach and the Φ−derivable formulation. As an example, the formation and dissociation of deuterons in nuclear matter is discussed. We formulate the cluster Φ−derivable approach to quark-hadron matter which allows to take into account the specifics of chiral symmetry restoration and deconfinement in triggering the Mott-dissociation of hadrons. This approach unifies the description of a strongly coupled quark-gluon plasma with that of a medium-modified hadron resonance gas description which are contained as limiting cases. The developed formalism shall replace the common two-phase approach to the description of the deconfinement and chiral phase transition that requires a phase transition construction between separately developed equations of state for hadronic and quark matter phases. Applications to the phenomenology of heavy-ion collisions and astrophysics are outlined.

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Section: Light Cluster Formation and Symmetry Energy In Low-energy Hementioning

confidence: 82%

Towards a Unified Quark-Hadron-Matter Equation of State for Applications in Astrophysics and Heavy-Ion Collisions

et al. 2018

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“…The observation of light nuclei, which are emitted in Fermi-energy HICs, allows one to determine the density and temperature of warm dilute matter from experiments (Kowalski et al, 2007;Natowitz et al, 2010;Wada et al, 2012). The derived symmetry energies of the clustered matter indicate an increase as compared to those obtained in model calculations of uniform matter that is assumed to be composed solely of nucleons.…”

Section: Heavy-ion Collisionsmentioning

confidence: 88%

Equations of state for supernovae and compact stars

et al. 2017

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A review is given of various theoretical approaches for the equation of state (EoS) of dense matter, relevant for the description of core-collapse supernovae, compact stars, and compact star mergers. The emphasis is put on models that are applicable to all of these scenarios. Such EoS models have to cover large ranges in baryon number density, temperature, and isospin asymmetry. The characteristics of matter change dramatically within these ranges, from a mixture of nucleons, nuclei, and electrons to uniform, strongly interacting matter containing nucleons, and possibly other particles such as hyperons or quarks. As the development of an EoS requires joint efforts from many directions, different theoretical approaches are considered and relevant experimental and observational constraints which provide insights for future research are discussed. Finally, results from applications of the discussed EoS models are summarized.

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“…It is also an important ingredient in astrophysical calculations such as the evolution of protoneutron stars or the core collapse of a massive star and the associated explosive nucleosynthesis [50,51]. In the last years some progress has been achieved in heavy-ion collision experiments to extract the temperature dependence of F sym at low densities [52].…”

Section: A Thermal Properties Of Asymmetric Nuclear Mattermentioning

confidence: 99%

Thermal properties of asymmetric nuclear matter

Fedoseew

Lenske

2015

Phys. Rev. C

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The thermal properties of asymmetric nuclear matter are investigated in a relativistic mean-field approach. We start from free-space NN interactions and derive in-medium self-energies by the Dirac-Brueckner theory. By the density-dependent relativistic hadron procedure we derive in a self-consistent approach density-dependent meson-baryon vertices. At the mean-field level, we include isoscalar and isovector-scalar and vector interactions. The nuclear equation of state is investigated for a large range of total baryon densities up to the neutron star regime, the full range of asymmetries ξ = Z/A from symmetric nuclear matter to pure neutron matter, and temperatures up to T ∼ 100 MeV. The isovector-scalar self-energies are found to modify strongly the thermal properties of asymmetric nuclear matter. A striking result is the change of phase transitions when isovector-scalar self-energies are included.

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Nuclear matter symmetry energy at0.03⩽ρ/ρ0⩽0.2

Cited by 52 publications

References 38 publications

Towards a Unified Quark-Hadron-Matter Equation of State for Applications in Astrophysics and Heavy-Ion Collisions

Towards a Unified Quark-Hadron-Matter Equation of State for Applications in Astrophysics and Heavy-Ion Collisions

Equations of state for supernovae and compact stars

Thermal properties of asymmetric nuclear matter

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