264 citations · 2.6k across the 71 of their papers we have counts for
7 papers · 1 filter
Massively Parallel Tensor Network State Algorithms on Hybrid CPU-GPU Based Architectures
Andor Menczer, Örs Legeza
The interplay of quantum and classical simulation and the delicate divide between them is in the focus of massively parallelized tensor network state (TNS) algorithms designed for…
Exact matrix product state representation and convergence of a fully correlated electronic wavefunction in the infinite basis limit
Gero Friesecke, Benedikt R. Graswald, Örs Legeza
In this article we present the exact representation of a fully correlated electronic wavefunction as the single-particle basis approaches completeness. It consists of a half-infini…
Fermionic systems for quantum information people
Szilárd Szalay, Zoltán Zimborás, Mihály Máté +3
The operator algebra of fermionic modes is isomorphic to that of qubits, the difference between them is twofold: the embedding of subalgebras corresponding to mode subsets and mult…
Role of the pair potential for the saturation of generalized Pauli constraints
Örs Legeza, Christian Schilling
The dependence of the (quasi-)saturation of the generalized Pauli constraints on the pair potential is studied for ground states of few-fermion systems. For this, we consider spinl…
The correlation theory of the chemical bond
Szilárd Szalay, Gergely Barcza, Tibor Szilvási +2
The quantum mechanical description of the chemical bond is generally given in terms of delocalized bonding orbitals, or, alternatively, in terms of correlations of occupations of l…
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…
Quantum information analysis of electronic states at different molecular structures
G. Barcza, Ö. Legeza, K. H. Marti +1
We have studied transition metal clusters from a quantum information theory perspective using the density-matrix renormalization group (DMRG) method. We demonstrate the competition…