{"product_id":"extensions-to-the-no-core-shell-model-importance-truncation-regulators-and-reactions-von-michael-karl-gerhard-kruse","title":"Extensions to the No-Core Shell Model","description":"\n                \u003cp\u003e\n                    \u003ci\u003eExtensions to the No-Core Shell Model\u003c\/i\u003e 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. \u003c\/p\u003e\n                \u003cp\u003eThis 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.\u003c\/p\u003e\n            \u003cdiv class=\"aw-variant-hidden-subtitle-div\" id=\"aw-variant-subtitle-9783319013923\"\u003e\u003ch3\u003eImportance-Truncation, Regulators and Reactions\u003c\/h3\u003e\u003c\/div\u003e","brand":"Libri","offers":[{"title":"Hardcover - 9783319013923","offer_id":843848318982,"sku":"9783319013923","price":106.99,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0940\/0622\/files\/2abaec61-8345-431e-89df-cd4d7fd46fc0.jpg?v=1775278567","url":"https:\/\/shop.autorenwelt.de\/en\/products\/extensions-to-the-no-core-shell-model-importance-truncation-regulators-and-reactions-von-michael-karl-gerhard-kruse","provider":"Autorenwelt Shop","version":"1.0","type":"link"}