Nonlocal annihilation of Weyl fermions in correlated systems

  title={Nonlocal annihilation of Weyl fermions in correlated systems},
  author={Luca Crippa and Adriano Amaricci and Niklas Wagner and Giorgio Sangiovanni and Jan Carl Budich and Massimo Capone},
  journal={Physical Review Research},
Weyl semimetals (WSMs) are characterized by topologically stable pairs of nodal points in the band structure, that typically originate from splitting a degenerate Dirac point by breaking symmetries such as time reversal or inversion symmetry. Within the independent electron approximation, the transition between an insulating state and a WSM requires the local creation or annihilation of one or several pairs of Weyl nodes in reciprocal space. Here, we show that strong electron-electron… 

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