Giant monopole resonances and nuclear incompressibilities studied for the zero-range and separable pairing interactions
(2012) In Physical Review C (Nuclear Physics) 86(2).- Abstract
- Background: Following the 2007 precise measurements of monopole strengths in tin isotopes, there has been a continuous theoretical effort to obtain a precise description of the experimental results. Up to now, there is no satisfactory explanation of why the tin nuclei appear to be significantly softer than Pb-208. Purpose: We determine the influence of finite-range and separable pairing interactions on monopole strength functions in semimagic nuclei. Methods: We employ self-consistently the quasiparticle random phase approximation on top of spherical Hartree-Fock-Bogoliubov solutions. We use the Arnoldi method to solve the linear-response problem with pairing. Results: We found that the difference between centroids of giant monopole... (More)
- Background: Following the 2007 precise measurements of monopole strengths in tin isotopes, there has been a continuous theoretical effort to obtain a precise description of the experimental results. Up to now, there is no satisfactory explanation of why the tin nuclei appear to be significantly softer than Pb-208. Purpose: We determine the influence of finite-range and separable pairing interactions on monopole strength functions in semimagic nuclei. Methods: We employ self-consistently the quasiparticle random phase approximation on top of spherical Hartree-Fock-Bogoliubov solutions. We use the Arnoldi method to solve the linear-response problem with pairing. Results: We found that the difference between centroids of giant monopole resonances measured in lead and tin (about 1 MeV) always turns out to be overestimated by about 100%. We also found that the volume incompressibility, obtained by adjusting the liquid-drop expression to microscopic results, is significantly larger than the infinite-matter incompressibility. Conclusions: The zero-range and separable pairing forces cannot induce modifications of monopole strength functions in tin to match experimental data. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/3070133
- author
- Vesely, P. ; Toivanen, J. ; Carlsson, Gillis LU ; Dobaczewski, J. ; Michel, N. and Pastore, A.
- organization
- publishing date
- 2012
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Physical Review C (Nuclear Physics)
- volume
- 86
- issue
- 2
- article number
- 024303
- publisher
- American Physical Society
- external identifiers
-
- wos:000307274500003
- scopus:84864634200
- ISSN
- 0556-2813
- DOI
- 10.1103/PhysRevC.86.024303
- language
- English
- LU publication?
- yes
- additional info
- The information about affiliations in this record was updated in December 2015. The record was previously connected to the following departments: Mathematical Physics (Faculty of Technology) (011040002)
- id
- a51732e9-7ec6-4d72-9dba-ab5ff815d63c (old id 3070133)
- date added to LUP
- 2016-04-01 13:58:37
- date last changed
- 2022-01-27 22:06:07
@article{a51732e9-7ec6-4d72-9dba-ab5ff815d63c,
abstract = {{Background: Following the 2007 precise measurements of monopole strengths in tin isotopes, there has been a continuous theoretical effort to obtain a precise description of the experimental results. Up to now, there is no satisfactory explanation of why the tin nuclei appear to be significantly softer than Pb-208. Purpose: We determine the influence of finite-range and separable pairing interactions on monopole strength functions in semimagic nuclei. Methods: We employ self-consistently the quasiparticle random phase approximation on top of spherical Hartree-Fock-Bogoliubov solutions. We use the Arnoldi method to solve the linear-response problem with pairing. Results: We found that the difference between centroids of giant monopole resonances measured in lead and tin (about 1 MeV) always turns out to be overestimated by about 100%. We also found that the volume incompressibility, obtained by adjusting the liquid-drop expression to microscopic results, is significantly larger than the infinite-matter incompressibility. Conclusions: The zero-range and separable pairing forces cannot induce modifications of monopole strength functions in tin to match experimental data.}},
author = {{Vesely, P. and Toivanen, J. and Carlsson, Gillis and Dobaczewski, J. and Michel, N. and Pastore, A.}},
issn = {{0556-2813}},
language = {{eng}},
number = {{2}},
publisher = {{American Physical Society}},
series = {{Physical Review C (Nuclear Physics)}},
title = {{Giant monopole resonances and nuclear incompressibilities studied for the zero-range and separable pairing interactions}},
url = {{https://lup.lub.lu.se/search/files/3706157/3167628.pdf}},
doi = {{10.1103/PhysRevC.86.024303}},
volume = {{86}},
year = {{2012}},
}