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Title: Many-body correlations of QRPA in nuclear matrix elements of double-beta decay

We present two new ideas on the quasiparticle random-phase approximation (QRPA) approach for calculating nuclear matrix elements of double-beta decay. First, it is necessary to calculate overlaps of the QRPA states obtained on the basis of the ground states of different nuclei. We calculate this overlap using quasiboson vacua as the QRPA ground states. Second, we show that two-particle transfer paths are possible to use for the calculation under the closure approximation. A calculation is shown for {sup 150}Nd→{sup 150}Sm using these two new ideas, and their implication is discussed.
Authors:
 [1]
  1. Division of Physics and Center for Computational Sciences, University of Tsukuba, Tsukuba 305-8577 (Japan)
Publication Date:
OSTI Identifier:
22492677
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 1686; Journal Issue: 1; Conference: MEDEX'15: Workshop on calculation of double-beta-decay matrix elements, Prague (Czech Republic), 9-12 Jun 2015; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; CORRELATIONS; DOUBLE BETA DECAY; GROUND STATES; MANY-BODY PROBLEM; NEODYMIUM 150; NUCLEAR MATRIX; PARTICLES; RANDOM PHASE APPROXIMATION; SAMARIUM 150