Ab initio calculations on nuclear matter properties including the effects of three-nucleons interaction
arXiv:1210.0593
Abstract
In this thesis, the ground state properties of nuclear matter, namely the energy per particle and the response to weak probes, are computed, studying the effects of three nucleon interactions. Both the variational approach, based on the formalism of correlated basis function, and the auxiliary field diffusion Monte Carlo method have been used. A scheme suitable to construct a density-dependent two-nucleon potential in correlated basis approach is discussed. The density dependent potential resulting from UIX three-nucleon force has been employed in auxiliary field diffusion Monte Carlo calculations that turned out to be in very good agreement with correlated basis variational results. Hence, the underbinding of symmetric nuclear matter has to be ascribed to deficiencies of the UXI potential. A comparative analysis of the equations of state of both pure neutron matter and symmetric nuclear matter obtained using a new generation of "chiral inspired" local three-body potentials has been performed. These potentials provide an excellent description of the properties of light nuclei, as well as of the neutron-deuteron doublet scattering length. The weak response of symmetric nuclear matter has been computed at three-body cluster level. Two-body effective interactions and one-body effective operators have been derived within the formalism of correlated basis functions. The inclusion of the three-body cluster term in the effective interaction allowed for a direct inclusion of the UIX three-nucleon potential. Moreover, the sizable unphysical dependence of the effective weak operator is removed once the three-body cluster term is taken into account.
arXiv commentPhD thesis at SISSA-ISAS, Trieste, Italy
References in corpus (49)
- Shapiro delay measurement of a two solar mass neutron star
- An accurate nucleon-nucleon potential with charge-independence breaking
- The equation of state for nucleon matter and neutron star structure
- The high-precision, charge-dependent Bonn nucleon-nucleon potential (CD-Bonn)
- Chiral effective field theory and nuclear forces
- Accurate Charge-Dependent Nucleon-Nucleon Potential at Fourth Order of Chiral Perturbation Theory
- Construction of high-quality Nucleon-Nucleon potential models
- Quantum Monte Carlo Calculations of Nuclei
- The two-nucleon system at next-to-next-to-next-to-leading order
- Three-Nucleon Forces from Chiral Effective Field Theory
- Improved nuclear matter calculations from chiral low-momentum interactions
- Realistic models of pion-exchange three-nucleon interactions
- Chiral three-nucleon forces and neutron matter
- Evolution of Nuclear Spectra with Nuclear Forces
- Spin-Isospin Structure and Pion Condensation in Nucleon Matter
- Microscopic determination of the nuclear incompressibility within the non-relativistic framework
- Reworking the Tucson-Melbourne Three-Nucleon Potential
- Subleading contributions to the chiral three-nucleon force I: long-range terms
- A Constrained Path Quantum Monte Carlo Method for Fermion Ground States
- Low-density neutron matter
- Is nuclear matter perturbative with low-momentum interactions?
- Subleading contributions to the chiral three-nucleon force II: Short-range terms and relativistic corrections
- Nuclear Physics from Lattice QCD
- Chiral Symmetry and Three-Nucleon Forces
- Quantum Monte Carlo Calculations of Neutron Matter
- The Deuteron and Exotic Two-Body Bound States from Lattice QCD
- Density-dependent effective nucleon-nucleon interaction from chiral three-nucleon forces
- Helium nuclei, deuteron and dineutron in 2+1 flavor lattice QCD
- Cold neutrons trapped in external fields
- Neutron matter at zero temperature with auxiliary field diffusion Monte Carlo
- Precision neutron interferometric measurements and updated evaluations of the n-p and n-d coherent neutron scattering lengths
- Comparative study of neutron and nuclear matter with simplified Argonne nucleon-nucleon potentials
- Symmetry Constraints and Variational Principles in Diffusion Quantum Monte Carlo Calculations of Excited-State Energies
- Shear viscosity of neutron matter from realistic nucleon-nucleon interactions
- Issues and Observations on Applications of the Constrained-Path Monte Carlo Method to Many-Fermion Systems
- Quantum Monte Carlo calculations of symmetric nuclear matter
- The inclusive transverse response of nuclear matter
- Comparative study of three-nucleon force models in systems
- Auxiliary Field Diffusion Monte Carlo calculation of ground state properties of neutron drops
- Comparative study of three-nucleon potentials in nuclear matter
- Lattice QCD approach to Nuclear Physics
- Spin-orbit and tensor interactions in homogeneous matter of nucleons: accuracy of modern many-body theories
- Weak response of cold symmetric nuclear matter at three-body cluster level
- Quenching of Weak Interactions in Nucleon Matter
- Correlation effects on the weak response of nuclear matter
- Spin Response and Neutrino Emissivity of Dense Neutron Matter
- The Auxiliary Field Diffusion Monte Carlo Method for Nuclear Physics and Nuclear Astrophysics
- Density-dependent nucleon-nucleon interaction from UIX three-nucleon force
- Weak Response of Nuclear Matter