[HTML][HTML] Superconductivity in high-Tc and related strongly correlated systems from variational perspective: Beyond mean field theory

J Spałek, M Fidrysiak, M Zegrodnik, A Biborski - Physics Reports, 2022 - Elsevier
The principal purpose of this topical review is to single out some of the universal features of
high-temperature (high-T c) and related strongly-correlated systems, which can be …

Quantum-optimal-control-inspired ansatz for variational quantum algorithms

A Choquette, A Di Paolo, PK Barkoutsos… - Physical Review …, 2021 - APS
A central component of variational quantum algorithms (VQAs) is the state-preparation
circuit, also known as ansatz or variational form. This circuit is most commonly designed …

Period 4 stripe in the extended two-dimensional Hubbard model

B Ponsioen, SS Chung, P Corboz - Physical Review B, 2019 - APS
We study the competition between stripe states with different periods and a uniform d-wave
superconducting state in the extended two-dimensional Hubbard model at 1/8 hole doping …

Compact numerical solutions to the two-dimensional repulsive Hubbard model obtained via nonunitary similarity transformations

W Dobrautz, H Luo, A Alavi - Physical Review B, 2019 - APS
Similarity transformation of the Hubbard Hamiltonian using a Gutzwiller correlator leads to a
non-Hermitian effective Hamiltonian, which can be expressed exactly in momentum-space …

Antiferromagnetism, charge density wave, and d-wave superconductivity in the extended tJU model: role of intersite Coulomb interaction and a critical overview of …

M Abram, M Zegrodnik, J Spałek - Journal of Physics: Condensed …, 2017 - iopscience.iop.org
In the first part of the paper, we study the stability of antiferromagnetic (AF), charge density
wave (CDW), and superconducting (SC) states within the tJUV model of strongly correlated …

Universal properties of high-temperature superconductors from real-space pairing: model and its quantitative comparison with experiment

J Spałek, M Zegrodnik, J Kaczmarczyk - Physical Review B, 2017 - APS
Selected universal experimental properties of high-temperature superconducting (HTS)
cuprates have been singled out in the last decade. One of the pivotal challenges in this field …

Gutzwiller hybrid quantum-classical computing approach for correlated materials

Y Yao, F Zhang, CZ Wang, KM Ho, PP Orth - Physical Review Research, 2021 - APS
Rapid progress in noisy intermediate-scale quantum (NISQ) computing technology has led
to the development of novel resource-efficient hybrid quantum-classical algorithms, such as …

Hidden Mott transition and large- superconductivity in the two-dimensional Hubbard model

LF Tocchio, F Becca, S Sorella - Physical Review B, 2016 - APS
We consider the one-band Hubbard model on the square lattice by using variational and
Green's function Monte Carlo methods, where the variational states contain Jastrow and …

Metallic and insulating stripes and their relation with superconductivity in the doped Hubbard model

LF Tocchio, A Montorsi, F Becca - SciPost Physics, 2019 - scipost.org
The dualism between superconductivity and charge/spin modulations (the so-called stripes)
dominates the phase diagram of many strongly-correlated systems. A prominent example is …

Superconductivity in the three-band model of cuprates: Variational wave function study and relation to the single-band case

M Zegrodnik, A Biborski, M Fidrysiak, J Spałek - Physical Review B, 2019 - APS
The d-wave superconductivity (SC) is analyzed within the three-band dp model with the use
of the diagrammatic expansion of the Gutzwiller wave function method (DE-GWF). The …