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@ARTICLE{Shen:902619,
      author       = {Shen, Shihang and Lähde, Timo A. and Lee, Dean and
                      Meißner, Ulf-G.},
      title        = {{W}igner {SU}(4) symmetry, clustering, and the spectrum of
                      $^{12}${C}},
      journal      = {The European physical journal / A},
      volume       = {57},
      number       = {9},
      issn         = {1434-6001},
      address      = {Heidelberg},
      publisher    = {Springer},
      reportid     = {FZJ-2021-04414},
      pages        = {276},
      year         = {2021},
      abstract     = {We present lattice calculations of the low-lying spectrum
                      of 12C using a simple nucleon–nucleon interaction that is
                      independent of spin and isospin and therefore invariant
                      under Wigner’s SU(4) symmetry. We find strong signals for
                      all excited states up to ∼15 MeV above the ground state,
                      and explore the structure of each state using a large
                      variety of α cluster and harmonic oscillator trial states,
                      projected onto given irreducible representations of the
                      cubic group. We are able to verify earlier findings for the
                      α clustering in the Hoyle state and the second 2+ state of
                      12C. The success of these calculations to describe the full
                      low-lying energy spectrum using spin-independent
                      interactions suggest that either the spin-orbit interactions
                      are somewhat weak in the 12C system, or the effects of α
                      clustering are diminishing their influence. This is in
                      agreement with previous findings from ab initio shell model
                      calculations.},
      cin          = {IAS-4},
      ddc          = {530},
      cid          = {I:(DE-Juel1)IAS-4-20090406},
      pnm          = {5111 - Domain-Specific Simulation Data Life Cycle Labs
                      (SDLs) and Research Groups (POF4-511) / DFG project
                      196253076 - TRR 110: Symmetrien und Strukturbildung in der
                      Quantenchromodynamik (196253076) / Nuclear Lattice
                      Simulations $(hfz02_20190501)$},
      pid          = {G:(DE-HGF)POF4-5111 / G:(GEPRIS)196253076 /
                      $G:(DE-Juel1)hfz02_20190501$},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000698108300001},
      doi          = {10.1140/epja/s10050-021-00586-6},
      url          = {https://juser.fz-juelich.de/record/902619},
}