04421nam 22006735 450 991073943280332120200704231951.03-319-01393-910.1007/978-3-319-01393-0(CKB)3710000000019097(EBL)1474327(SSID)ssj0001010781(PQKBManifestationID)11534500(PQKBTitleCode)TC0001010781(PQKBWorkID)11004319(PQKB)10101106(DE-He213)978-3-319-01393-0(MiAaPQ)EBC1474327(PPN)172423864(EXLCZ)99371000000001909720130905d2013 u| 0engur|n|---|||||txtccrExtensions to the No-Core Shell Model Importance-Truncation, Regulators and Reactions /by Michael Karl Gerhard Kruse1st ed. 2013.Cham :Springer International Publishing :Imprint: Springer,2013.1 online resource (135 p.)Springer Theses, Recognizing Outstanding Ph.D. Research,2190-5053Doctoral Thesis accepted by the University of Arizona, USA.3-319-01392-0 Includes bibliographical references.Introduction to Low-Energy Nuclear Physics -- The No Core Shell Model -- Importance Truncated No Core Shell Model -- UV and IR Properties of the NCSM -- Extending the NCSM with the RGM -- Conclusion.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.Springer Theses, Recognizing Outstanding Ph.D. Research,2190-5053Particles (Nuclear physics)Quantum field theoryNuclear physicsHeavy ionsString modelsElementary Particles, Quantum Field Theoryhttps://scigraph.springernature.com/ontologies/product-market-codes/P23029Nuclear Physics, Heavy Ions, Hadronshttps://scigraph.springernature.com/ontologies/product-market-codes/P23010Quantum Field Theories, String Theoryhttps://scigraph.springernature.com/ontologies/product-market-codes/P19048Particles (Nuclear physics)Quantum field theory.Nuclear physics.Heavy ions.String models.Elementary Particles, Quantum Field Theory.Nuclear Physics, Heavy Ions, Hadrons.Quantum Field Theories, String Theory.539.743Kruse Michael Karl Gerhardauthttp://id.loc.gov/vocabulary/relators/aut1424554BOOK9910739432803321Extensions to the No-Core Shell Model3553829UNINA