Speaker
Dr
Nicolae Sandulescu
(National Institute of Physics and Nuclear Engineering, Bucharest, Romania)
Description
The common treatment of proton-neutron (pn) pairing in N = Z nuclei relies on Cooper pairs and HFB-type models. However, in these nuclei the pn interaction generates quartet correlations of alpha type which compete with the Cooper pairs. In fact, for any T=0 and T=1 pairing interactions the ground state of N = Z systems is accurately described not by Cooper pairs but in terms of collective quartets [1-8]. Alpha-like quartets are relevant degrees of freedom for treating also more general two-body interactions than pairing [9-11]. From this perspective, I will discuss how the quartetting is affecting the competition between the T=0 and T=1 pn pairing correlations in nuclei as well as the contribution of pairing to the Wigner energy.
- N. Sandulescu, D. Negrea, J. Dukelsky, C. W. Johnson, PRC 85, 061303(R) (2012)
- N. Sandulescu, D. Negrea, C. W. Johnson, PRC 86, 041302(R) (2012)
- D. Negrea and N. Sandulescu, PRC 90, 024322 (2014)
- N. Sandulescu, D. Negrea, D. Gambacurta, Phys. Lett. B 751 348 (2015)
- M. Sambataro and N. Sandulescu, PRC 88, 061303(R) (2013), PRC 93,054320 (2016)
- M. Sambataro, N. Sandulescu, C. W. Johnson, Phys. Lett. B 770, 137 (2015)
- D. Negrea, N. Sandulescu, D. Gambacurta, Prog. Theor. Exp. Phys. 073D05 (2017)
- D. Negrea, P. Buganu, D. Gambacurta, N. Sandulescu, PRC 98, 064319 (2018)
- M. Sambataro and N. Sandulescu, Phys. Rev. Lett. 115, 112501 (2015)
- M. Sambataro and N. Sandulescu, Eur. J. Phys. 53, 47 (2017)
- M. Sambataro and N. Sandulescu, Phys. Lett. B 786, 11 (2018)
Primary author
Dr
Nicolae Sandulescu
(National Institute of Physics and Nuclear Engineering, Bucharest, Romania)
