Speaker
Description
Nowadays, searching for $\alpha$ condensation around a core nucleus is an interesting topic. Previous theoretical studies predicted $^{16}$O+2$\alpha$ condensed states. However, there was strong mixing with non-resonant states and it causes the identification of true resonant states non-trivial.
To address this issue, we aim to provide a more robust theoretical verification of the $^{16}$O+2$\alpha$ condensation to identify the resonant states and predict their properties.
We employ the real-time evolution method(REM), which generates physically important basis states using the equation of motion, minimizing contamination from the continuum. The analytical continuation in the coupling constant (ACCC) was used to estimate the $\alpha$-decay widths.
The present results point out much better convergence of eigenstates, and the 0$^{+}_3$ and 0$^{+}_4$ states showed remarkable isoscalar monopole transition strengths, which were in good agreement with the previous theoretical work. The small $\alpha$-decay widths for these states suggest that experimental observation appears feasible.
Therefore, The real-time evolution method (REM) proved effective in identifying the candidates of 2$\alpha$ condensate around the $^{16}$O nucleus.
| Research field of your presentation | Theoretical Low-energy nuclear physics |
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