Results 11 to 20 of about 10,400,724 (310)
Multilevel Density Functional Theory [PDF]
Journal of Chemical Theory and Computation, 2021 We introduce a novel density-based multilevel approach in density functional theory. In this multilevel density functional theory (MLDFT), the system is partitioned in an active and an inactive fragment, and all interactions are retained between the two parts.
Marrazzini, Gioia +5 more
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“Ensemblization” of density functional theory
The Journal of Chemical PhysicsDensity functional theory (DFT) has transformed our ability to investigate and understand electronic ground states. In its original formulation, however, DFT is not suited to addressing (e.g.) degenerate ground states, mixed states with different particle numbers, or excited states.
Tim Gould +2 more
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Density-functional theory on graphs [PDF]
The Journal of Chemical Physics, 2021 The principles of density-functional theory are studied for finite lattice systems represented by graphs. Surprisingly, the fundamental Hohenberg–Kohn theorem is found void, in general, while many insights into the topological structure of the density-potential mapping can be won.
Penz, Markus, van Leeuwen, Robert
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Subsystem Density-Functional Theory (Update) [PDF]
, 2023 The past years since the publication of our review on subsystem density-functional theory (sDFT) [WIREs Comput. Mol. Sci. 2014, 4:325--362] have witnessed a rapid development and diversification of quantum mechanical fragmentation and embedding ...
Christoph, Jacob, Johannes, Neugebauer
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Density functional theory [PDF]
Photosynthesis Research, 2009 Density functional theory (DFT) finds increasing use in applications related to biological systems. Advancements in methodology and implementations have reached a point where predicted properties of reasonable to high quality can be obtained. Thus, DFT studies can complement experimental investigations, or even venture with some confidence into ...
Orio, Maylis +2 more
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Spin in density‐functional theory [PDF]
International Journal of Quantum Chemistry, 2012 AbstractThe accurate description of open‐shell molecules, in particular of transition metal complexes and clusters, is still an important challenge for quantum chemistry. Although density‐functional theory (DFT) is widely applied in this area, the sometimes severe limitations of its currently available approximate realizations often preclude its ...
Jacob Christoph R., Reiher Markus
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Multiconfiguration Pair-Density Functional Theory for Chromium(IV) Molecular Qubits [PDF]
, 2022 Pseudo-tetrahedral organometallic complexes containing chromium(IV) and aryl ligands have been experimentally identified as promising molecular qubit candidates. Here we present a computational protocol based on multiconfiguration pair-density functional
Arturo, Sauza-de la Vega +5 more
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Multi-State Density Functional Theory for Ground and Excited States [PDF]
, 2021 We report a rigorous formulation of multi-state density functional theory (MSDFT) that extends the Kohn-Sham (KS) energy functional for the ground state to a Hamiltonian matrix functional H[D] of the density matrix D in the space spanned by the lowest N ...
Jiali, Gao, Yangyi, Lu
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Localized Active Space Pair-Density Functional Theory [PDF]
, 2021 Accurate quantum chemical methods for the prediction of spin-state energy gaps for strongly correlated systems are computationally expensive and scale poorly with the size of the system.
Matthew R., Hermes +4 more
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Density Matrix Embedding Using Multiconfiguration Pair-Density Functional Theory [PDF]
, 2023 We present a quantum embedding method for ground and excited states of extended systems that uses multiconfiguration pair-density functional theory (MC-PDFT) with densities provided by periodic density matrix embedding theory (pDMET).
Matthew , Hermes +2 more
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