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Interweaving of elementary modes of excitation in superfluid nuclei through particle-vibration coupling : Quantitative account of the variety of nuclear structure observables

Idini, A. LU ; Potel, G. ; Barranco, F. ; Vigezzi, E. and Broglia, R. A. (2015) In Physical Review C - Nuclear Physics 92(3).
Abstract

A complete characterization of the structure of nuclei can be obtained by combining information arising from inelastic scattering, Coulomb excitation, and γ-decay, together with one- and two-particle transfer reactions. In this way it is possible to probe both the single-particle and collective components of the nuclear many-body wave function resulting from the coupling of these modes and, as a result, diagonalizing the low-energy Hamiltonian. We address the question of how accurately such a description can account for experimental observations in the case of superfluid nuclei. Our treatment goes beyond the traditional approach, in which these properties are calculated separately, and most often for systems near closed shells, based on... (More)

A complete characterization of the structure of nuclei can be obtained by combining information arising from inelastic scattering, Coulomb excitation, and γ-decay, together with one- and two-particle transfer reactions. In this way it is possible to probe both the single-particle and collective components of the nuclear many-body wave function resulting from the coupling of these modes and, as a result, diagonalizing the low-energy Hamiltonian. We address the question of how accurately such a description can account for experimental observations in the case of superfluid nuclei. Our treatment goes beyond the traditional approach, in which these properties are calculated separately, and most often for systems near closed shells, based on perturbative approximations (weak coupling). It is concluded that renormalizing empirically and on equal footing bare single-particle and collective motion of open-shell nuclei in terms of self-energy (mass) and vertex corrections (screening), as well as particle-hole and pairing interactions through particle-vibration coupling (PVC), leads to a detailed, quantitative account of the data, constraining the possible values of the k mass, of the 1S0 bare NN interaction, and of the PVC strengths within a rather narrow window.

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author
; ; ; and
publishing date
type
Contribution to journal
publication status
published
subject
in
Physical Review C - Nuclear Physics
volume
92
issue
3
article number
031304
publisher
American Physical Society
external identifiers
  • scopus:84942292190
ISSN
0556-2813
DOI
10.1103/PhysRevC.92.031304
language
English
LU publication?
no
id
f5f6a286-360a-4412-a7ad-32546be5e942
date added to LUP
2020-07-27 09:00:56
date last changed
2020-08-05 05:48:15
@article{f5f6a286-360a-4412-a7ad-32546be5e942,
  abstract     = {<p>A complete characterization of the structure of nuclei can be obtained by combining information arising from inelastic scattering, Coulomb excitation, and γ-decay, together with one- and two-particle transfer reactions. In this way it is possible to probe both the single-particle and collective components of the nuclear many-body wave function resulting from the coupling of these modes and, as a result, diagonalizing the low-energy Hamiltonian. We address the question of how accurately such a description can account for experimental observations in the case of superfluid nuclei. Our treatment goes beyond the traditional approach, in which these properties are calculated separately, and most often for systems near closed shells, based on perturbative approximations (weak coupling). It is concluded that renormalizing empirically and on equal footing bare single-particle and collective motion of open-shell nuclei in terms of self-energy (mass) and vertex corrections (screening), as well as particle-hole and pairing interactions through particle-vibration coupling (PVC), leads to a detailed, quantitative account of the data, constraining the possible values of the k mass, of the 1S0 bare NN interaction, and of the PVC strengths within a rather narrow window.</p>},
  author       = {Idini, A. and Potel, G. and Barranco, F. and Vigezzi, E. and Broglia, R. A.},
  issn         = {0556-2813},
  language     = {eng},
  month        = {09},
  number       = {3},
  publisher    = {American Physical Society},
  series       = {Physical Review C - Nuclear Physics},
  title        = {Interweaving of elementary modes of excitation in superfluid nuclei through particle-vibration coupling : Quantitative account of the variety of nuclear structure observables},
  url          = {http://dx.doi.org/10.1103/PhysRevC.92.031304},
  doi          = {10.1103/PhysRevC.92.031304},
  volume       = {92},
  year         = {2015},
}