In medium T-matrix for nuclear matter with three-body forces - binding energy and single particle properties

Abstract

We present spectral calculations of nuclear matter properties including three-body forces. Within the in-medium T-matrix approach, implemented with the CD-Bonn and Nijmegen potentials plus the three-nucleon Urbana interaction, we compute the energy per particle in symmetric and neutron matter. The three-body forces are included via an effective density dependent two-body force in the in-medium T-matrix equations. After fine tuning the parameters of the three-body force to reproduce the phenomenological saturation point in symmetric nuclear matter, we calculate the incompressibility and the energy per particle in neutron matter. We find a soft equation of state in symmetric nuclear matter but a relatively large value of the symmetry energy. We study the the influence of the three-body forces on the single-particle properties. For symmetric matter the spectral function is broadened at all momenta and all densities, while an opposite effect is found for the case of neutrons only. Noticeable modification of the spectral functions are realized only for densities above the saturation density. The modifications of the self-energy and the effective mass are not very large and appear to be strongly suppressed above the Fermi momentum.

20 pages, 11 figures

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• Correlated density-dependent chiral forces for infinite matter calculations within the Green's function approach
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• Relativistic Effects and Three-Nucleon Forces in Nuclear Matter and Nuclei
• Pairing and short-range correlations in nuclear systems
• Tensor force effects and high-momentum components in the nuclear symmetry energy
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• Nucleon momentum distributions in asymmetric nuclear matter
• Correlations in Nuclear Matter
• Three-body force effect on off-shell mass operator and spectral functions in nuclear matter
• Neutron spectroscopic factors of ${}^{55}$Ni hole-states from (p,d) transfer reactions
• Anomalous propagators and the particle-particle channel: Hedin's equations
• Quantum Monte Carlo in Configuration Space with Three-Nucleon Forces
• Many-body Propagator Theory with Three-Body Interactions: a Path to Exotic Open Shell Isotopes
• Symmetry energy properties of neutron-rich nuclei from the coherent density fluctuation model applied to nuclear matter calculations with Bonn potentials
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• Relativistic Effects in 3-Nucleon Forces for Nuclear Matter and Finite Nuclei
• Exactness of the normal-ordered two-body truncation of three-nucleon forces
• Nambu-Covariant Many-Body Theory II: Self-Consistent Approximations
• Three-body Force Effects on the Properties of Neutron-rich Nuclear Matter
• SU(3)_f Constraints on Hypernuclear Energy Density Functionals