264 citations · 2.6k across the 71 of their papers we have counts for
9 papers · 1 filter
Interplay between exotic superfluidity and magnetism in a chain of four-component ultracold atoms
E. Szirmai, G. Barcza, J. Sólyom +1
We investigate the spin-polarized chain of ultracold fermionic atoms with spin-3/2 described by the fermionic Hubbard model with SU(4) symmetric attractive interaction. The competi…
Hückel--Hubbard-Ohno modeling of -bonds in ethene and ethyne with application to trans-polyacetylene
Máté Timár, Gergely Barcza, Florian Gebhard +2
Quantum chemistry calculations provide the potential energy between two carbon atoms in ethane (HCCH), ethene (HCCH), and ethyne (HCCH) as a function…
Concept of chemical bond and aromaticity based on quantum information theory
T. Szilvási, G. Barcza, Ö. Legeza
Quantum information theory (QIT) emerged in physics as standard technique to extract relevant information from quantum systems. It has already contributed to the development of nov…
Entanglement structure of the Hubbard model in momentum space
G. Ehlers, J. Sólyom, Ö. Legeza +1
We study the properties of the ground states of the one- and two-dimensional Hubbard models at half filling and moderate doping using entanglement-based measures, which we calculat…
Advanced density matrix renormalization group method for nuclear structure calculations
Ö. Legeza, L. Veis, A. Poves +1
We present an efficient implementation of the Density Matrix Renormalization Group (DMRG) algorithm that includes an optimal ordering of the proton and neutron orbitals and an effi…
Dissecting the Bond Formation Process of -Metal-Ethene Complexes with Multireference Approaches
Yilin Zhao, Katharina Boguslawski, Paweł Tecmer +4
The bonding mechanism of ethene to a nickel or palladium center is studied by the density matrix renormalization group algorithm, the complete active space self consistent field me…
Momentum distribution functions in a one-dimensional extended periodic Anderson model
I. Hagymasi, J. Solyom, O. Legeza
We study the momentum distribution of the electrons in an extended periodic Anderson model, where the interaction, , between itinerant and localized electrons is taken into…
On the calculation of complete dissociation curves of closed-shell pseudo-onedimensional systems through the multireference method of increments
Edoardo Fertitta, Beate Paulus, Gergely Barcza +1
The Method of Increments (MoI) has been employed using a multireference approach to calculate the dissociation curve of beryllium ring-shaped clusters Be of different sizes. Be…
Fermionic orbital optimisation in tensor network states
C. Krumnow, L. Veis, Ö. Legeza +1
Tensor network states and specifically matrix-product states have proven to be a powerful tool for simulating ground states of strongly correlated spin models. Recently, they have…