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@ARTICLE{Schuster:602517,
      author       = {Schuster, Stephan and Kühn, Stefan and Funcke, Lena and
                      Hartung, Tobias and Pleinert, Marc-Oliver and von Zanthier,
                      Joachim and Jansen, Karl},
      title        = {{S}tudying the phase diagram of the three-flavor
                      {S}chwinger model in the presence of a chemical potential
                      with measurement- and gate-based quantum computing},
      reportid     = {PUBDB-2024-00637, arXiv:2311.14825},
      year         = {2024},
      abstract     = {We propose an ansatz quantum circuit for the variational
                      quantum eigensolver (VQE), suitable for exploring the phase
                      structure of the multi-flavor Schwinger model in the
                      presence of a chemical potential. Our ansatz is capable of
                      incorporating relevant model symmetries via constrains on
                      the parameters, and can be implemented on circuit-based as
                      well as measurement-based quantum devices. We show via
                      classical simulation of the VQE that our ansatz is able to
                      capture the phase structure of the model, and can
                      approximate the ground state to a high level of accuracy.
                      Moreover, we perform proof-of-principle simulations on
                      superconducting, gate-based quantum hardware. Our results
                      show that our approach is suitable for current gate-based
                      quantum devices, and can be readily implemented on
                      measurement-based quantum devices once available.},
      keywords     = {potential: chemical (INSPIRE) / hardware: quantum (INSPIRE)
                      / computer: quantum (INSPIRE) / critical phenomena (INSPIRE)
                      / variational quantum eigensolver (INSPIRE) / quantum device
                      (INSPIRE) / Schwinger model (INSPIRE) / capture (INSPIRE) /
                      ground state (INSPIRE) / superconductivity (INSPIRE) /
                      quantum circuit (INSPIRE) / Monte Carlo (INSPIRE) / lattice
                      field theory (INSPIRE) / Hamiltonian formalism (INSPIRE) /
                      Hilbert space (INSPIRE) / spin (INSPIRE) / Gauss law
                      (INSPIRE) / Pauli (INSPIRE) / renormalization (INSPIRE) /
                      boundary condition (INSPIRE)},
      cin          = {CQTA},
      cid          = {I:(DE-H253)CQTA-20221102},
      pnm          = {611 - Fundamental Particles and Forces (POF4-611)},
      pid          = {G:(DE-HGF)POF4-611},
      experiment   = {EXP:(DE-MLZ)NOSPEC-20140101},
      typ          = {PUB:(DE-HGF)25},
      eprint       = {2311.14825},
      howpublished = {arXiv:2311.14825},
      archivePrefix = {arXiv},
      SLACcitation = {$\%\%CITATION$ = $arXiv:2311.14825;\%\%$},
      doi          = {10.3204/PUBDB-2024-00637},
      url          = {https://bib-pubdb1.desy.de/record/602517},
}