Showing papers by "T.T.S. Kuo published in 2012"
TL;DR: In this paper, an effective shell-model hamiltonian based on perturbative expansion of the Q-box vertex function was derived for the case of a non-degenerate (0+2) hbaromega model space.
Abstract: This paper discusses the derivation of an effective shell-model hamiltonian starting from a realistic nucleon-nucleon potential by way of perturbation theory. More precisely, we present the state of the art of this approach when the starting point is the perturbative expansion of the Q-box vertex function. Questions arising from diagrammatics, intermediate-states and order-by-order convergences, and their dependence on the chosen nucleon-nucleon potential, are discussed in detail, and the results of numerical applications for the p-shell model space starting from chiral next-to-next-to-next-to-leading order potentials are shown. Moreover, an alternative graphical method to derive the effective hamiltonian, based on the Z-box vertex function recently introduced by Suzuki et al., is applied to the case of a non-degenerate (0+2) hbaromega model space. Finally, our shell-model results are compared with the exact ones obtained from no-core shell-model calculations.
50 citations
TL;DR: In this article, an effective shell-model hamiltonian based on perturbative expansion of the Q ˆ -box vertex function has been derived for the case of a non-degenerate (0 + 2 ) ħ ω model space.
49 citations
01 Jan 2012
TL;DR: A.A. Gargano and T. S. Kuo as discussed by the authors have published a survey of the state-of-the-art research work in physics at the University of Napoli.
Abstract: A. CovelloIstituto Nazionale di Fisica Nucleare, Sezione di Napoli, and Universita` diNapoli Federico II, Complesso Universitario di Monte S. Angelo,ViaCintia, I-80126 Napoli, ItalyA. GarganoIstituto Nazionale di Fisica Nucleare, Sezione di NapoliT. T. S. KuoDepartment of Physics, SUNY, Stony Brook, New York 11794, USA
3 citations
TL;DR: In this article, the pairing properties of a realistic shell-model effective interaction has been investigated in describing nuclei around doubly magic 132Sn and 134Te with two valence protons and neutrons, respectively.
Abstract: This paper starts with a brief historical overview of pairing in nuclei, which fulfills the purpose of properly framing the main subject. This concerns the pairing properties of a realistic shell-model effective interaction which has proved very successful in describing nuclei around doubly magic 132Sn. We focus attention on the two nuclei 134Te and 134Sn with two valence protons and neutrons, respectively. Our study brings out the key role of one particle-one hole excitations in producing a significant difference between proton and neutron pairing in this region.
2 citations