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Nuclear matter
About: Nuclear matter is a research topic. Over the lifetime, 10180 publications have been published within this topic receiving 248261 citations.
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TL;DR: A survey of the role and relevance of the nuclear symmetry energy in different fields of research and of the accuracy of its determination from the phenomenology and from the microscopic many-body theory is presented in this paper.
208 citations
TL;DR: In this article, an analytically solvable test problem that incorporates both the aspect of the vacuum as well as that of a phase transition in the equation of state is considered, and the dependence of the lifetime of the mixed phase on the initial energy density is discussed.
208 citations
TL;DR: In this article, the effects of coupling to an isovector-scalar meson in a phenomenological hadronic field theory have been investigated for the equation of state and the phase diagram of asymmetric nuclear matter.
Abstract: We try to single out some qualitative effects of coupling to a \ensuremath{\delta}-isovector-scalar meson, introduced in a minimal way in a phenomenological hadronic field theory. Results for the equation of state (EOS) and the phase diagram of asymmetric nuclear matter (ANM) are discussed. We stress the consistency of the \ensuremath{\delta}-coupling introduction in a relativistic approach. Contributions to the slope and curvature of the symmetry energy and to the neutron-proton effective mass splitting appear particularly interesting. A more repulsive EOS for neutron matter at high baryon densities is expected. Effects on the critical properties of warm ANM, mixing mechanical and chemical instabilities and isospin distillation, are also presented. The \ensuremath{\delta} influence is mostly on the isovectorlike collective response. The results are largely analytical, and this makes the physical meaning quite transparent. Implications for nuclear structure properties of drip-line nuclei and for reaction dynamics with radioactive beams are finally pointed out.
207 citations
TL;DR: In this paper, the four-particle correlations in fermion systems at finite temperatures are investigated with special attention to the formation of a condensate, and a new equation is obtained which describes the onset of ''quartetting'' for symmetric nuclear matter, below a critical density.
Abstract: Four-particle correlations in fermion systems at finite temperatures are investigated with special attention to the formation of a condensate. Instead of the instability of the normal state with respect to the onset of pairing described by the Gorkov equation, a new equation is obtained which describes the onset of ``quartetting.'' Applying to symmetric nuclear matter, below a critical density, the four-particle condensation ( $\ensuremath{\alpha}$-like quartetting) is found to be favored over deuteron condensation (triplet pairing). This pairing-quartetting competition is expected to be a general feature of interacting fermion systems, such as the exciton-biexciton system in excited semiconductors. Possible experimental consequences are pointed out.
207 citations
TL;DR: In this paper, the chiral restoration phase transition in hot and/or dense hadronic matter is discussed in terms of the BR scaling based on chiral symmetry and scale anomaly of QCD.
206 citations