2004/09/28 by T. Frick, H. Müther, Arnau Rios +4 · 122 citations
Mathematics · Physics and Astronomy · #Asymmetry #Atomic physics #Cold Atom Physics and Bose-Einstein Condensates #Condensed matter physics #Mathematics #Momentum (technical analysis) #Neutron #Nuclear matter #Nuclear physics #Nuclear physics research studies #Nucleon #Physics #Proton #Quantum electrodynamics #Quantum mechanics #Quantum, superfluid, helium dynamics #Saturation (graph theory) #Spectral function #Symmetry (geometry) #nucl-th
paper · pdf · doi:10.1103/physrevc.71.014313
published in Physical Review C 71(1) (American Institute of Physics) · 7 pages, 7 figures
arxiv created 2004/09/28 · openalex publication_date 2005/01/27 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
The single-particle spectral functions in asymmetric nuclear matter are computed using the ladder approximation within the theory of finite temperature Green's functions. The internal energy and the momentum distributions of protons and neutrons are studied as a function of the density and the asymmetry of the system. The proton states are more strongly depleted when the asymmetry increases whereas the occupation of the neutron states is enhanced compared to the symmetric case. The self-consistent Green's function approach leads to slightly smaller energies compared to the Brueckner-Hartree-Fock approach. This effect increases with density and thereby modifies the saturation density and leads to smaller symmetry energies.