Quantum critical points and the sign problem
The “sign problem”(SP) is a fundamental limitation to simulations of strongly correlated
matter. It is often argued that the SP is not intrinsic to the physics of particular Hamiltonians …
matter. It is often argued that the SP is not intrinsic to the physics of particular Hamiltonians …
Bilayer Hubbard model: Analysis based on the fermionic sign problem
The bilayer Hubbard model describes the antiferromagnet to spin singlet transition and,
potentially, aspects of the physics of unconventional superconductors. Despite these …
potentially, aspects of the physics of unconventional superconductors. Despite these …
Emergent half-metal at finite temperatures in a Mott insulator
Sustaining exotic quantum mechanical phases at high temperatures is a long-standing goal
of condensed matter physics. Among them, half-metals are spin-polarized conductors that …
of condensed matter physics. Among them, half-metals are spin-polarized conductors that …
Mean-field ground-state phase diagram of the ionic-Hubbard chain
M Sekania, S Garuchava, J Berakdar… - arXiv preprint arXiv …, 2022 - arxiv.org
Ground state (GS) phase diagram of the one dimensional repulsive Hubbard model with
both nearest neighbor ($ t $) and next-nearest-neighbor ($ t^{\prime} $) hopping and a …
both nearest neighbor ($ t $) and next-nearest-neighbor ($ t^{\prime} $) hopping and a …
Metal-insulator transitions in three-component Falicov-Kimball model within coherent potential approximation
TH Nguyen, T Hoang Anh… - Communications in …, 2022 - ui.adsabs.harvard.edu
We apply the coherent potential approximation to study the three-component Falicov-
Kimball model, in which single-component and two-component fermionic particles are mixed …
Kimball model, in which single-component and two-component fermionic particles are mixed …