Authors:
- Nominated by University of Arizona, USA, as an outstanding Ph.D. thesis
- Presents three extensions to the No-Core Shell Model which allow for larger calculations of nuclei, specifically for the p-shell nuclei
- Develops a new technique for reducing basis spaces so that heavier nuclei can be investigated within the No-Core Shell Model
- Provides an understanding of how structures of different atomic nuclei arise directly from the fundamental strong interactions among protons and neutrons
Part of the book series: Springer Theses (Springer Theses)
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Table of contents (6 chapters)
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Front Matter
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Back Matter
About this book
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.
Authors and Affiliations
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Lawrence Livermore National Laboratory, Livermore, USA
Michael Karl Gerhard Kruse
About the author
Current affiliation:
Lawrence Livermore National Laboratory
Livermore, CA 94550
USA
Research performed at:
University of Arizona
Department of Physics
Tucson, AZ 85721
USA
Dr. Michael Kruse completed his Ph.D. thesis in April 2012 at the University of Arizona, USA, and is currently at Lawrence Livermore National Laboratory (LLNL), Livermore, CA, USA. He was twice awarded with the Galileo Circle Scholars award, in 2009 and 2012, which are given by the Galileo Circle at the University of Arizona to the finest undergraduate and graduate science students.
Bibliographic Information
Book Title: Extensions to the No-Core Shell Model
Book Subtitle: Importance-Truncation, Regulators and Reactions
Authors: Michael Karl Gerhard Kruse
Series Title: Springer Theses
DOI: https://doi.org/10.1007/978-3-319-01393-0
Publisher: Springer Cham
eBook Packages: Physics and Astronomy, Physics and Astronomy (R0)
Copyright Information: Springer International Publishing Switzerland 2013
Hardcover ISBN: 978-3-319-01392-3Published: 19 September 2013
Softcover ISBN: 978-3-319-37581-6Published: 23 August 2016
eBook ISBN: 978-3-319-01393-0Published: 05 September 2013
Series ISSN: 2190-5053
Series E-ISSN: 2190-5061
Edition Number: 1
Number of Pages: XIII, 126
Number of Illustrations: 7 b/w illustrations, 45 illustrations in colour
Topics: Elementary Particles, Quantum Field Theory, Nuclear Physics, Heavy Ions, Hadrons, Quantum Field Theories, String Theory