Author

Kiyoshi Katō

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Preprint Oct 2026

Real-time decay dynamics of the low-lying $1/2^+$ state in $^9$Be: Signatures of virtual-state behavior

The low-lying $1/2^+$ state of $^9$Be has been interpreted either as a near-threshold resonance or as an $^8$Be+$n$ virtual state. Because both pictures can produce a pronounced threshold enhancement, its nature is difficult to determine from energy-domain observables alone. We investigate the low-lying $1/2^+$ state t...

Y. Kikuchi, Kiyoshi Katō, T. Myo · 0 citations

Preprint Sep 2026

Time-evolution formalism in the complex scaling method: Application to the two-proton decay of $^{6}$Be

We apply our complex-scaled time-evolution operator to the two-proton decay of $^{6}$Be. The nucleus is described as an $\alpha+p+p$ three-body system with explicit Jacobi-coordinate rearrangement and the realistic Argonne $v8'$ NN interaction for the proton-proton subsystem. Starting from a confined initial wave packe...

Y. Kikuchi, Kiyoshi Katō, T. Myo · 1 citation