From bare to renormalized order parameter in gauge space: Structure and reactions

G. Potel, A. Idini, F. Barranco, E. Vigezzi, and R. A. Broglia
Phys. Rev. C 96, 034606 – Published 12 September 2017

Abstract

It is not physically obvious why one can calculate with similar accuracy, as compared to the experimental data, the absolute cross section associated with two-nucleon transfer processes between members of pairing rotational bands, making use of simple BCS (constant matrix elements) or of many-body [Nambu-Gorkov (NG), nuclear field theory (NFT)] spectroscopic amplitudes. Restoration of spontaneous symmetry breaking and associated emergent generalized rigidity in gauge space provides the answer and points to a new emergence: A physical sum rule resulting from the intertwining of structure and reaction processes, closely connected with the central role induced pairing interaction plays in structure, together with the fact that successive transfer dominates Cooper pair tunneling.

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  • Received 31 May 2017
  • Revised 21 July 2017

DOI:https://doi.org/10.1103/PhysRevC.96.034606

©2017 American Physical Society

Physics Subject Headings (PhySH)

Nuclear Physics

Authors & Affiliations

G. Potel

  • National Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, Michigan 48824, USA

A. Idini

  • Department of Physics, University of Surrey, Guildford, GU2 7HX, United Kingdom

F. Barranco

  • Departamento de Fìsica Aplicada III, Escuela Superior de Ingenieros, Universidad de Sevilla, Camino de los Descubrimientos, E-41092 Sevilla, Spain

E. Vigezzi

  • INFN Sezione di Milano, Via Celoria 16, I-20133 Milano, Italy

R. A. Broglia

  • Dipartimento di Fisica, Università degli Studi di Milano, Via Celoria 16, I-20133 Milano, Italy and The Niels Bohr Institute, University of Copenhagen, DK-2100 Copenhagen, Denmark

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Issue

Vol. 96, Iss. 3 — September 2017

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