Zobrazeno 1 - 10
of 307
pro vyhledávání: '"S. Pittel"'
Publikováno v:
Physical Review C. 102
We propose a pair-condensate variational approach (PCV) to determine a set of the most important collective pairs in the description of low-lying states in atomic nuclei. Having available the precise details on these key collective pairs -- their spi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fcd2ff50229d83bc682d0d60c533cce0
https://doi.org/10.1103/physrevc.102.024310
https://doi.org/10.1103/physrevc.102.024310
We describe the importance of charge-exchange reactions, and in particular Gamow-Teller transitions, in astrophysical processes and double beta decay, and in understanding of nuclear structure. We first provide an overview of the central role played
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::77feb012ea788f3c930765336e27e998
Publikováno v:
Journal of Physics: Conference Series. 1610:012012
We report a systematic study of Gamow-Teller (GT) transitions in the 2p1f shell, using the nuclear shell model with a schematic Hamiltonian. The Hamiltonian used contains a quadrupole-quadrupole interaction, isoscalar (T = 0) and isovector (T = 1) pa
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a703ee68d852258ffafc93ce0282650d
https://doi.org/10.1088/1742-6596/1610/1/012012
https://doi.org/10.1088/1742-6596/1610/1/012012
Publikováno v:
Physical Review C. 94
By using the general triaxial rotor model (TRM) and the phonon-configuration mixing scheme within an anharmonic-vibrator (AHV) framework, a series of global correlations between electromagnetic properties of nuclear ${2}_{1}^{+}$ and ${2}_{2}^{+}$ st
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::198e83d0d05ccbd44cde552a88ad5b38
https://doi.org/10.1103/physrevc.94.024301
https://doi.org/10.1103/physrevc.94.024301
Publikováno v:
Digital.CSIC. Repositorio Institucional del CSIC
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5 pags., 4 figs.
We study the structure of the number-projected BCS (PBCS) wave function in the particle-hole basis, displaying its similarities with coupled clusters theory (CCT). The analysis of PBCS together with several modifications suggest
We study the structure of the number-projected BCS (PBCS) wave function in the particle-hole basis, displaying its similarities with coupled clusters theory (CCT). The analysis of PBCS together with several modifications suggest
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e8fd547acfa156614a7dcae3fc9e0765
http://hdl.handle.net/10261/152274
http://hdl.handle.net/10261/152274
Autor:
S. Pittel, Piet Van Isacker
Publikováno v:
Physica Scripta
Physica Scripta, 2016, 91 (2), 023009 (23pp). ⟨10.1088/0031-8949/91/2/023009⟩
Physica Scripta, 2016, 91 (2), 023009 (23pp). ⟨10.1088/0031-8949/91/2/023009⟩
We discuss symmetries of the spherical shell model that make contact with the geometric collective model of Bohr and Mottelson. The most celebrated symmetry of this kind is SU(3), which is the basis of Elliott's model of rotation. It corresponds to a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b980d7c2d84da35190ee969eb41a6f29
Autor:
Víctor Velázquez, Joel Mendoza-Temis, Irving O. Morales, Jorge G. Hirsch, J.C. Lopez-Vieyra, J. Barea, S. Pittel, Alejandro Frank, Piet Van Isacker
Publikováno v:
International Journal of Modern Physics E
International Workshop on Nuclear Structure Physics
International Workshop on Nuclear Structure Physics, Jun 2008, Shangai, China. pp.398-411, ⟨10.1142/S0218301308012014⟩
International Workshop on Nuclear Structure Physics
International Workshop on Nuclear Structure Physics, Jun 2008, Shangai, China. pp.398-411, ⟨10.1142/S0218301308012014⟩
International audience; A review of recent advances in the theoretical analysis of nuclear mass models and their predictive power is presented. After introducing two tests which probe the ability of nuclear mass models to extrapolate, three models ar
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8673964d4f23ae077bfb0cb47e0b6412
https://doi.org/10.1142/s0218301308012014
https://doi.org/10.1142/s0218301308012014
Publikováno v:
International Journal of Modern Physics E. 16:210-221
We review the development of the microscopic BCS theory of superconductivity and the exact solution of the pairing Hamiltonian given by Richardson in 1963. We then introduce the generalized Richardson-Gaudin exactly-solvable pairing models for SU(2)
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::52866ed020262b61c456693a6e34b97e
https://doi.org/10.1142/s0218301307005545
https://doi.org/10.1142/s0218301307005545
Publikováno v:
Physical Review C. 92
The electromagnetic features of the $11/{2}^{\ensuremath{-}}$ isomers in the $^{111\ensuremath{-}127}\mathrm{Cd}$ isotopes are reproduced by numerically optimized shell-model wave functions. A sudden phase change of the wave functions at $N=70$ is id
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a73c66b9477204ac0f6e2545fe928ddb
https://doi.org/10.1103/physrevc.92.024321
https://doi.org/10.1103/physrevc.92.024321
Publikováno v:
Digital.CSIC. Repositorio Institucional del CSIC
instname
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6 págs.; 1 fig.; XXXVIII Symposium on Nuclear Physics (Cocoyoc 2015); Open Access funded by Creative Commons Atribution Licence 3.0
We consider the structure of the number projected BCS wave function in the particle-hole basis, and use it to st
We consider the structure of the number projected BCS wave function in the particle-hole basis, and use it to st
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2db91a66c9ce40ab93bf3a5779f4575f
http://hdl.handle.net/10261/136871
http://hdl.handle.net/10261/136871