Download or read book Nuclear Physics at Low Renormalization Group Resolution written by Anthony J. Tropiano and published by . This book was released on 2022 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Low-energy nuclear physics encompasses the physics of many-body systems of protons and neutrons (nucleons) ranging from atomic nuclei to neutron stars. Experimental facilities, such as the Facility of Rare Isotope Beams (FRIB), seek to answer overarching questions central to our understanding of atomic nuclei, astrophysics, and fundamental symmetries, such as the origin of heavy elements. Theoretical approaches face the challenge of describing this wide range of physics starting from the force between nucleons. Traditionally, low-energy nuclear theory is split into structure and reaction theory, where the former deals with the static properties of nuclei and the latter with dynamic nuclear processes. Understanding the interplay of reaction and structure theory is critical for reliable predictions and analysis of FRIB experiments. The renormalization group (RG) allows for consistent treatments of reaction and structure. RG transformations continuously shift the resolution scale of structure and reaction components (i.e., wave functions and reaction operators) under a specified scheme, where the resolution scale corresponds to the largest momentum of low-energy wave functions, and the scheme reflects the details of the starting Hamiltonian and RG implementation. Observable quantities are invariant under RG transformations, though structure and reaction components individually depend on the RG resolution scale and scheme. We can take advantage of this latter RG dependence by shifting the resolution scale to make complicated problems feasible. RG transformations decouple low- and high-energy scales in nuclear interactions, facilitating large-scale nuclear structure approaches that rely on many-body basis expansions. The RG has widely been applied to nuclear structure, but not to nuclear reactions or the combination of the two. RG transformations can facilitate nuclear reaction approaches by simplifying initial and final states in transition matrix elements, where RG-transformed reaction operators gain induced many-body contributions. Process-independent quantities (e.g., momentum distributions) can be extracted from experiment via a factorization of nuclear structure components and the reaction operators (the probe), but as a result of factorization, are scale and scheme dependent. The RG provides a natural tool for handling this scale and scheme dependence, which is crucial for interpreting experiments and comparing extracted quantities to theory. This thesis demonstrates each of these points by using the similarity RG (SRG) to transform chiral effective field theory (EFT) or phenomenological interactions, and their associated operators, to low RG resolution. We explore aspects of operator evolution that have particular relevance in the context of scale and scheme dependence of nuclear processes. These aspects include SRG implementations based on the Magnus expansion, band- versus block-diagonal operator flow, universality for chiral EFT interactions and associated operators with different regularization schemes, and the impact of factorization arising from scale separation. We show how the features of short-range correlation phenomenology are cleanly identified at low RG resolution using simple two-body operators and local-density approximations with uncorrelated wave functions, all of which can be systematically generalized. We verify that the experimental consequences to date follow directly at low RG resolution from well-established properties of nuclear interactions. We describe the quasi-deuteron model at low RG resolution and determine the Levinger constant, which is proportional to the ratio of nuclear photo-absorption to that for photo-disintegration of a deuteron. Implications for consistently extracting spectroscopic factors in electron-induced proton knock-out reactions are discussed. The results of this thesis contribute to a broader effort to model processes relevant to FRIB, such as knock-out or break-up reactions.

Download or read book Investigations of the Renormalization Group Approach to the Nucleon nucleon Interaction written by Sunethra Ramanan and published by . This book was released on 2007 with total page 209 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis work has investigated the Renormalization Group theory for the nucleon-nucleon interaction. Conventional nuclear many-body calculations have the following sources of non-perturbative physics: (1) a strongly repulsive short-range interaction, (2) a tensor force, e.g. from pion exchange, which is highly singular at short-distances, (3) the presence of low-energy bound states or nearly bound states (in the S waves).

Download or read book Uncertainty quantification in nuclear physics written by Maria Piarulli and published by Frontiers Media SA. This book was released on 2023-08-30 with total page 233 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book New Applications of the Renormalization Group in Nuclear Particle and Condensed Matter Physics written by Royal Society and published by . This book was released on 2011 with total page 199 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book NASA Technical Memorandum written by and published by . This book was released on 1988 with total page 706 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Renormalization Group written by Dmitrij V. Širkov and published by World Scientific Publishing Company Incorporated. This book was released on 1988 with total page 468 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Nuclear Science Abstracts written by and published by . This book was released on 1976 with total page 612 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Future Energy Conferences and Symposia written by and published by . This book was released on 1991 with total page 484 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Future of Nuclear Structure Challenges and Opportunities in the Microscopic Description of Nuclei written by Luigi Coraggio and published by Frontiers Media SA. This book was released on 2021-03-10 with total page 209 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book 1973 National Science Foundation Authorization written by United States. Congress. House. Committee on Science and Astronautics. Subcommittee on Science, Research, and Development and published by . This book was released on 1972 with total page 740 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book 1973 National Science Foundation Authorization Hearings Before and the Subcommittee on Sciences Research and Development 92 2 on H R 12753 superseded by H R 14108 February 9 22 23 24 29 March 1 2 7 8 1972 written by United States. Congress. House. Science and Astronautics and published by . This book was released on 1972 with total page 740 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Nuclear Physics written by and published by . This book was released on 2003 with total page 474 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Energy Research Abstracts written by and published by . This book was released on 1993-10 with total page 578 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book ERDA Energy Research Abstracts written by United States. Energy Research and Development Administration and published by . This book was released on 1977 with total page 900 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book New Facet of Three Nucleon Force 50 Years of Fujita Miyazawa Three Nucleon Force FM50 written by Hideyuki Sakai and published by American Institute of Physics. This book was released on 2008-05-20 with total page 348 pages. Available in PDF, EPUB and Kindle. Book excerpt: This symposium focused on three-nucleon force problems in nuclei. This is because the year 2007 corresponds to the 50 year anniversary of the three-nucleon force model based on the two-pion-exchange mechanism proposed by Fujita Miyazawa. Achievements of three-nucleon force studies, both in theory and in experiment, during this half century are presented and future perspectives for three-nucleon force studies pointing towards a new era are explored.

Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1994 with total page 880 pages. Available in PDF, EPUB and Kindle. Book excerpt: Lists citations with abstracts for aerospace related reports obtained from world wide sources and announces documents that have recently been entered into the NASA Scientific and Technical Information Database.

Download or read book ERDA Energy Research Abstracts written by United States. Energy Research and Development Administration. Technical Information Center and published by . This book was released on 1977 with total page 1066 pages. Available in PDF, EPUB and Kindle. Book excerpt: