Zobrazeno 1 - 10
of 2 244
pro vyhledávání: '"Kaufmann J"'
Publikováno v:
Phys. Rev. Research 5, L022016 (2023)
We investigate the metal-to-insulator phase transition driven by the density-density electronic interaction in the quarter-filled model on a cubic lattice with two orbitals split by a crystal field. We show that a systematic consideration of the non-
Externí odkaz:
http://arxiv.org/abs/2204.02116
Publikováno v:
Phys. Rev. B 103, 205141 (2021)
We compute scattering rates for electrons in the two-dimensional Hubbard model for a one-orbital metal and a two-orbital band insulator by means of the Boltzmann scattering equation (BSE) and dynamical mean-field theory (DMFT). As an intermediate met
Externí odkaz:
http://arxiv.org/abs/2012.11257
Publikováno v:
Phys. Rev. Lett. 122, 127601 (2019)
We present a dynamical mean-field study of dynamical susceptibilities in two-band Hubbard model. Varying the model parameters we analyze the two-particle excitations in the normal as well as in the ordered phase, an excitonic condensate. The two-part
Externí odkaz:
http://arxiv.org/abs/1808.08046
While key effects of the many-body problem---such as Kondo and Mott physics---can be understood in terms of on-site correlations, non-local fluctuations of charge, spin, and pairing amplitudes are at the heart of the most fascinating and unresolved p
Externí odkaz:
http://arxiv.org/abs/1709.02663
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