14 citations · 45 across the 7 of their papers we have counts for
6 papers · 1 filter
Effective pairing interaction in the two-dimensional Hubbard model within a spin rotationally invariant approach
V. A. Apinyan, T. K. Kopec
We implement the rotationally-invariant formulation of the two-dimensional Hubbard model, with nearest-neighbors hopping , which allows for the analytical study of the system in…
Neel order in the Hubbard model within spin-charge rotating reference frame approach: crossover from weak to strong coupling
T. A. Zaleski, T. K. Kopec
The antiferromagnetic phase of two-dimensional (2D) and three-dimensional (3D) Hubbard model with nearest neighbors hopping is studied on a bipartite cubic lattice by means of the…
Generic gauge fields in the Hubbard model: emergence of pairing interaction
T. K. Kopec
The spin-rotationally invariant SU(2) approach to the Hubbard model is extended to accommodate the charge degrees of freedom. Both U(1) and SU(2) gauge transformation are useed to…
Critical charge instability on verge of the Mott transition and the origin of quantum protection in high- cuprates
T. K. Kopec
The concept of topological excitations and the related ground state degeneracy are employed to establish an effective theory of the superconducting state evolving from the Mott ins…
Nexus between quantum criticality and the chemical potential pinning in high- cuprates
Tadeusz K. Kopec
For strongly correlated electrons the relation between total number of charge carriers and the chemical potential reveals for large Coulomb energy the apparently paradoxi…
Composite quasiparticles and the "hidden" quantum critical point in the topological transition scenario of high- cuprates
T. K. Kopec
The quantum interference effects due to the Aharonov-Bohm-type phase factors are studied in the layered strongly correlated system relevant for cuprates. Casting…