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pro vyhledávání: '"Sushchyev, Alexander"'
Using a combination of unbiased quantum Monte Carlo simulations and a decoupled dimer mean-field theory, we investigate the thermal and quantum phase transitions of the spin-1/2 Heisenberg model on the dimerized diamond lattice. We find that at suffi
Externí odkaz:
http://arxiv.org/abs/2410.13706
Autor:
Sushchyev, Alexander, Wessel, Stefan
Publikováno v:
Phys. Rev. B 108, 235146 (2023)
Using large-scale quantum Monte Carlo simulations, we determine the ground state phase diagram of the spin-1/2 antiferromagnetic Heisenberg model on the honeycomb lattice for the most generic case of three varying interaction strengths along the diff
Externí odkaz:
http://arxiv.org/abs/2308.15871
Autor:
Sushchyev, Alexander, Wessel, Stefan
Publikováno v:
Phys. Rev. B 106, 155121 (2022)
Using finite-temperature determinantal quantum Monte Carlo simulations, we examine the thermodynamic properties of the extended Hubbard model on the half-filled square lattice in the Slater regime at intermediate coupling. We consider both the case o
Externí odkaz:
http://arxiv.org/abs/2205.09512