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@ARTICLE{Frame:889246,
      author       = {Frame, Dillon and Lähde, Timo A. and Lee, Dean and
                      Meißner, Ulf-G.},
      title        = {{I}mpurity lattice {M}onte {C}arlo for hypernuclei},
      journal      = {The European physical journal / A},
      volume       = {56},
      number       = {10},
      issn         = {1434-601X},
      address      = {Heidelberg},
      publisher    = {Springer},
      reportid     = {FZJ-2021-00151},
      pages        = {248},
      year         = {2020},
      abstract     = {We consider the problem of including Λ hyperons into the
                      ab initio framework of nuclear lattice effective field
                      theory. In order to avoid large sign oscillations in Monte
                      Carlo simulations, we make use of the fact that the number
                      of hyperons is typically small compared to the number of
                      nucleons in the hypernuclei of interest. This allows us to
                      use the impurity lattice Monte Carlo method, where the
                      minority species of fermions in the full nuclear Hamiltonian
                      is integrated out and treated as a worldline in Euclidean
                      projection time. The majority fermions (nucleons) are
                      treated as explicit degrees of freedom, with their mutual
                      interactions described by auxiliary fields. This is the
                      first application of the impurity lattice Monte Carlo method
                      to systems where the majority particles are interacting.
                      Here, we show how the impurity Monte Carlo method can be
                      applied to compute the binding energies of the light
                      hypernuclei. In this exploratory work we use
                      spin-independent nucleon–nucleon and hyperon–nucleon
                      interactions to test the computational power of the method.
                      We find that the computational effort scales approximately
                      linearly in the number of nucleons. The results are very
                      promising for future studies of larger hypernuclear systems
                      using chiral effective field theory and realistic
                      hyperon–nucleon interactions, as well as applications to
                      other quantum many-body systems.},
      cin          = {IAS-4 / IKP-3 / JARA-HPC},
      ddc          = {530},
      cid          = {I:(DE-Juel1)IAS-4-20090406 / I:(DE-Juel1)IKP-3-20111104 /
                      $I:(DE-82)080012_20140620$},
      pnm          = {511 - Computational Science and Mathematical Methods
                      (POF3-511) / DFG project 196253076 - TRR 110: Symmetrien und
                      Strukturbildung in der Quantenchromodynamik (196253076) /
                      Nuclear Lattice Simulations $(jara0015_20200501)$},
      pid          = {G:(DE-HGF)POF3-511 / G:(GEPRIS)196253076 /
                      $G:(DE-Juel1)jara0015_20200501$},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000578412200002},
      doi          = {10.1140/epja/s10050-020-00257-y},
      url          = {https://juser.fz-juelich.de/record/889246},
}