New description to soft modes in N-alpha cluster states as Bose-Einstein condensation based on quantum field theory with zero mode excitation

Junichi Takahashi, R. Katsuragi, Y. Kazama, Y. Nakamura, Yoshiya Yamanaka, S. Ohkubo

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Abstract

    In this paper, we consider the Nα cluster state as Bose-Einstein condensation and calculate the energy level for Nα nuclei from 12C-52Fe. We take the phenomenological model, and use the quantum field theoretical approach for finite system with spontaneous symmetry breaking. In our approach, the order parameter that is the density amplitude of Bose-Einstein condensation is introduced as the vacuum expectation value of the field operator. We non-perturbatively treat the zero mode operators, which accompany the spontaneous symmetry breaking and the order parameter, because their quantum fluctuations are large for finite system. Then the Hamiltonian for the zero mode operators gives a new type of energy levels with 0+ for Nα nuclei, which turn out to be robust for condensation rate and number of α clusters.

    Original languageEnglish
    Title of host publicationProceedings of the 4th International Workshop on State of the Art in Nuclear Cluster Physics, SOTANCP 2018
    EditorsCharles M. Folden, Vladilen Z. Goldberg, Grigory V. Rogachev, Marina Barbui
    PublisherAmerican Institute of Physics Inc.
    Volume2038
    ISBN (Electronic)9780735417649
    DOIs
    Publication statusPublished - 2018 Nov 13
    Event4th International Workshop on State of the Art in Nuclear Cluster Physics, SOTANCP 2018 - Galveston, United States
    Duration: 2018 May 132018 May 18

    Other

    Other4th International Workshop on State of the Art in Nuclear Cluster Physics, SOTANCP 2018
    CountryUnited States
    CityGalveston
    Period18/5/1318/5/18

    ASJC Scopus subject areas

    • Physics and Astronomy(all)

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  • Cite this

    Takahashi, J., Katsuragi, R., Kazama, Y., Nakamura, Y., Yamanaka, Y., & Ohkubo, S. (2018). New description to soft modes in N-alpha cluster states as Bose-Einstein condensation based on quantum field theory with zero mode excitation. In C. M. Folden, V. Z. Goldberg, G. V. Rogachev, & M. Barbui (Eds.), Proceedings of the 4th International Workshop on State of the Art in Nuclear Cluster Physics, SOTANCP 2018 (Vol. 2038). [020024] American Institute of Physics Inc.. https://doi.org/10.1063/1.5078843