[Triumf-seminars] TRIUMF Theory Seminar today at 13:00

[TRIUMF Seminars]

Date/Time: Tue 2014-08-19 at 13:00

Location:  Auditorium          

Speaker:   Wataru Horiuchi (Hokkaido University)

Title:     Correlated-basis description of alpha-cluster and delocalized 0+ states in 16O

Abstract: A simultaneous description of the ground and first excited 0+ states of 16O is one of outstanding and challenging problems in nuclear theory. Since a fully microscopic calculation is not practical at present, it is interesting to perform a 12C+n+n+p+p five-body calculation without assuming an alpha (4He) cluster. The interactions between the constituent particles are chosen consistently with the energies of bound subsystems. The five-body dynamics is solved with the stochastic variational method on correlated Gaussian basis functions. The energies of both the ground and first excited states are obtained in excellent agreement with experiment. Analysis of the wave functions indicates a spatially localized alpha-particle-like cluster structure for the excited state and a shell-model-like delocalized structure for the ground state. [Ref. W. Horiuchi and Y. Suzuki, Phys. Rev. C 89, 011304(R) (2014)]



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