Effective field theory of Bose-Einstein condensation of α clusters and Nambu-Goldstone-Higgs states in C 12

Y. Nakamura, Junichi Takahashi, Yoshiya Yamanaka, S. Ohkubo

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    An effective field theory of α-cluster condensation is formulated as a spontaneously broken symmetry in quantum field theory to understand the raison d'être and the nature of the Hoyle and α-cluster states in C12. The Nambu-Goldstone and Higgs mode operators in infinite systems are replaced with a pair of canonical operators whose Hamiltonian gives rise to discrete energy states in addition to the Bogoliubov-de Gennes excited states. The calculations reproduce well the experimental spectrum of the α-cluster states. The existence of the Nambu-Goldstone-Higgs states is demonstrated and crucial. The γ-decay transitions are also obtained.

    Original languageEnglish
    Article number014314
    JournalPhysical Review C - Nuclear Physics
    Issue number1
    Publication statusPublished - 2016 Jul 19


    ASJC Scopus subject areas

    • Nuclear and High Energy Physics

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