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Hybrid Monte Carlo study of competing order in the extended fermionic Hubbard model on the hexagonal lattice

Buividovich, Pavel ; Smith, Dominik ; Ulybyshev, Maksim ; von Smekal, Lorenz


Using first-principle Hybrid Monte Carlo (HMC) simulations, we carry out an unbiased study of the competition between spin-density wave (SDW) and charge-density wave (CDW) order in the extended Hubbard model on the two-dimensional hexagonal lattice at half filling. We determine the phase diagram in the space of on-site and nearest-neighbor couplings U and V in the region V < U/3, which can be ...


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