منابع مشابه
Saturation in the Nuclear Matter Problem
Once density-dependent meson masses are introduced into the nuclear many-body problem, conventional mechanisms for saturation no longer operate. We suggest that a loop correction, essentially the introduction of the axial vector coupling gA(ρ, k) as function of density ρ and momentum k, can bring about saturation, and present schematic calculations to illustrate this. We find that a very small ...
متن کاملRho Meson Properties in Nuclear Matter from Qcd Sum Rules∗
We study the properties of rho mesons in nuclear matter by means of QCD sum rules at finite density. For increased sensitivity, we subtract out the vacuum contributions. With the spectral function as estimated in the literature, these subtracted sum rules are found to be not well satisfied. We suppose that Landau singularities from higher resonance states in the nearby region in this channel ar...
متن کاملHolographic Nuclear Matter in AdS/QCD
We study the physics with finite nuclear density in the framework of AdS/QCD with holographic baryon field included. Based on a mean field type approach, we introduce the nucleon density as a bi-fermion condensate of the lowest mode of the baryon field and calculate the density dependence of the chiral condensate, the nucleon mass and the ρ-meson-nucleon coupling. We observe that the chiral con...
متن کاملSaturation properties and incompressibility of nuclear matter: A consistent determination from nuclear masses.
Starting with a two-body effective nucleon-nucleon interaction, it is shown that the infinite nuclear matter model of atomic nuclei is more appropriate than the conventional Bethe-Weizsacker like mass formulae to extract saturation properties of nuclear matter from nuclear masses. In particular, the saturation density thus obtained agrees with that of electron scattering data and the Hartree-Fo...
متن کاملOnset transition to cold nuclear matter from lattice QCD with heavy quarks.
Lattice QCD at finite density suffers from a severe sign problem, which has so far prohibited simulations of the cold and dense regime. Here we study the onset of nuclear matter employing a three-dimensional effective theory derived by combined strong coupling and hopping expansions, which is valid for heavy but dynamical quarks and has a mild sign problem only. Its numerical evaluations agree ...
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ژورنال
عنوان ژورنال: Progress of Theoretical Physics Supplement
سال: 2007
ISSN: 0375-9687
DOI: 10.1143/ptps.168.486