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Nuclear physics --- Nuclear shell theory --- Nuclear physics. --- Nuclear shell theory. --- Nuclear shell models --- Nuclear shell structure --- Shell models (Nuclear physics) --- Nuclear models --- Atomic nuclei --- Atoms, Nuclei of --- Nucleus of the atom --- Physics

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Models [Nuclear ] --- Modèles en couches (Physique nucléaire) --- Modèles nucléaires --- Nucleaire modellen --- Nucleaire structuur --- Nuclear models --- Nuclear shell models --- Nuclear shell structure --- Nuclear shell theory --- Nuclear structure --- Shell models (Nuclear physics) --- Structure [Nuclear ] --- Structure nucléaire --- Nuclear shell theory. --- Nuclear models. --- Nuclear structure. --- 539.142 --- Structure, Nuclear --- Nuclear physics --- Models, Nuclear --- 539.142 Nuclear models

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Hartree-Fock approximation --- -Nuclear shell theory --- -Self-consistent field theory --- -539.1 --- SCF theory --- Self consistent field method --- Self consistent fields --- Field theory (Physics) --- Molecular orbitals --- Nuclear shell models --- Nuclear shell structure --- Shell models (Nuclear physics) --- Nuclear models --- Hartree approximation --- Hartree-Fock-Slater approximation --- Approximation theory --- Atoms --- Energy-band theory of solids --- Many-body problem --- Self-consistent field theory --- Congresses --- Nuclear physics. Atomic physics. Molecular physics --- Nuclear physics. --- Nuclei --- Field theory (Physics). --- Self-consistent field theory. --- 539.1 Nuclear physics. Atomic physics. Molecular physics --- Nuclear shell theory --- 539.1

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539.1 --- Nuclear physics --- -Nilsson model --- Deformed shell model --- Model, Nilsson --- Shell model, Deformed --- Nuclear models --- Nuclear shell theory --- Nuclear spectroscopy --- Nuclear structure --- Atomic nuclei --- Atoms, Nuclei of --- Nucleus of the atom --- Physics --- Nuclear physics. Atomic physics. Molecular physics --- Mathematical models --- Nilsson model. --- Mathematical models. --- 539.1 Nuclear physics. Atomic physics. Molecular physics --- Nilsson model

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Extensions to the No-Core Shell Model presents three extensions to the No-Core Shell Model (NCSM) that allow for calculations of heavier nuclei, specifically for the p-shell nuclei. The Importance-Truncated NCSM (IT-NCSM) formulated on arguments of multi-configurational perturbation theory selects a small set of basis states from the initially large basis space in which the Hamiltonian is diagonalized. Previous IT-NCSM calculations have proven reliable, however, there has been no thorough investigation of the inherent error in the truncated IT-NCSM calculations. This thesis provides a detailed study of IT-NCSM calculations and compares them to full NCSM calculations to judge the accuracy of IT-NCSM in heavier nuclei. When IT-NCSM calculations are performed, one often needs to extrapolate the ground-state energy from the finite basis (or model) spaces to the full NCSM model space. In this thesis a careful investigation of the extrapolation procedures was performed. On a related note, extrapolations in the NCSM are commonplace, but up to recently did not have the ultraviolet (UV) or infrared (IR) physics under control. This work additionally presents a method that maps the NCSM parameters into an effective-field theory inspired framework, in which the UV and IR physics are treated appropriately. The NCSM is well-suited to describe bound-state properties of nuclei, but is not well-adapted to describe loosely bound systems, such as the exotic nuclei near the neutron drip line. With the inclusion of the Resonating Group Method (RGM), the NCSM / RGM can provide a first-principles description of exotic nuclei and the first extension of the NCSM.

Laser pulses, Ultrashort. --- Physics --- Physical Sciences & Mathematics --- Nuclear Physics --- Atomic Physics --- Nuclear shell theory. --- Nuclear models. --- Models, Nuclear --- Nuclear shell models --- Nuclear shell structure --- Shell models (Nuclear physics) --- Physics. --- Quantum field theory. --- String theory. --- Nuclear physics. --- Heavy ions. --- Hadrons. --- Elementary particles (Physics). --- Elementary Particles, Quantum Field Theory. --- Nuclear Physics, Heavy Ions, Hadrons. --- Quantum Field Theories, String Theory. --- Nuclear physics --- Nuclear models --- Quantum theory. --- Atomic nuclei --- Atoms, Nuclei of --- Nucleus of the atom --- Quantum dynamics --- Quantum mechanics --- Quantum physics --- Mechanics --- Thermodynamics --- Models, String --- String theory --- Nuclear reactions --- Ions --- Relativistic quantum field theory --- Field theory (Physics) --- Quantum theory --- Relativity (Physics) --- Elementary particles (Physics) --- High energy physics --- Nuclear particles --- Nucleons