Breathing-like excited state of the Hoyle state in ${}^{12}\mathrm{C}$

Bo Zhou, Akihiro Tohsaki, Hisashi Horiuchi +1

The existence of the $0_3^{+}$ and $0_4^{+}$ states around 10 MeV excitation energy in ${}^{12}\mathrm{C}$ is confirmed by a fully microscopic 3$\alpha$ cluster model. Firstly, a GCM (generato…