density functional theory
E166680
ab initio method
computational chemistry method
electronic structure method
many-body theory
quantum mechanical method
Density functional theory is a quantum mechanical method for calculating the electronic structure and properties of many-body systems, widely used in physics, chemistry, and materials science.
All labels observed (4)
| Label | Occurrences |
|---|---|
| density functional theory canonical | 3 |
| DFT+DMFT | 1 |
| LDA+DMFT | 1 |
| Time-Dependent Density Functional Theory | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T1462698 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: density functional theory Context triple: [Pauli exclusion principle, usedIn, density functional theory]
-
A.
Quantum Theory of Solids
Quantum Theory of Solids is a foundational physics text that systematically applies quantum mechanics to explain the electronic, thermal, and structural properties of crystalline solids.
-
B.
Eliashberg theory
Eliashberg theory is an extension of BCS superconductivity that incorporates strong-coupling and frequency-dependent effects to more accurately describe real superconducting materials.
-
C.
Brillouin–Wigner perturbation theory
Brillouin–Wigner perturbation theory is a formulation of quantum mechanical perturbation theory that uses an energy-dependent effective Hamiltonian to obtain improved approximations to eigenvalues and eigenstates.
-
D.
resonating valence bond theory
Resonating valence bond theory is a quantum mechanical model of electron pairing and spin correlations in strongly correlated materials, proposed to explain phenomena such as high-temperature superconductivity.
-
E.
Born–Oppenheimer approximation
The Born–Oppenheimer approximation is a fundamental method in molecular quantum mechanics that simplifies calculations by treating nuclear motion as much slower than electronic motion, allowing their behaviors to be separated.
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: density functional theory Target entity description: Density functional theory is a quantum mechanical method for calculating the electronic structure and properties of many-body systems, widely used in physics, chemistry, and materials science.
-
A.
Quantum Theory of Solids
Quantum Theory of Solids is a foundational physics text that systematically applies quantum mechanics to explain the electronic, thermal, and structural properties of crystalline solids.
-
B.
Eliashberg theory
Eliashberg theory is an extension of BCS superconductivity that incorporates strong-coupling and frequency-dependent effects to more accurately describe real superconducting materials.
-
C.
Brillouin–Wigner perturbation theory
Brillouin–Wigner perturbation theory is a formulation of quantum mechanical perturbation theory that uses an energy-dependent effective Hamiltonian to obtain improved approximations to eigenvalues and eigenstates.
-
D.
resonating valence bond theory
Resonating valence bond theory is a quantum mechanical model of electron pairing and spin correlations in strongly correlated materials, proposed to explain phenomena such as high-temperature superconductivity.
-
E.
Born–Oppenheimer approximation
The Born–Oppenheimer approximation is a fundamental method in molecular quantum mechanics that simplifies calculations by treating nuclear motion as much slower than electronic motion, allowing their behaviors to be separated.
- F. None of above. chosen
Statements (68)
| Predicate | Object |
|---|---|
| instanceOf |
ab initio method
ⓘ
computational chemistry method ⓘ electronic structure method ⓘ many-body theory ⓘ quantum mechanical method ⓘ |
| advantage | favorable balance between accuracy and computational cost ⓘ |
| approximates | exchange–correlation energy functional ⓘ |
| awardedNobelPrizeTo | Walter Kohn ⓘ |
| basedOn | electron density ⓘ |
| computes |
band structure of solids
ⓘ
density of states ⓘ electron density distribution ⓘ forces on atoms ⓘ response properties ⓘ total energy of many-electron systems ⓘ vibrational frequencies ⓘ |
| coreIdea | all ground-state observables are functionals of the electron density ⓘ |
| describes |
electronic structure of atoms
ⓘ
electronic structure of molecules ⓘ electronic structure of nanostructures ⓘ electronic structure of solids ⓘ electronic structure of surfaces ⓘ ground-state properties of many-electron systems ⓘ |
| extendedBy |
Lu Jeu Sham
ⓘ
Walter Kohn ⓘ |
| extendedInYear | 1965 ⓘ |
| fieldOfStudy |
condensed matter physics
ⓘ
materials science ⓘ quantum chemistry ⓘ |
| hasTheorem |
Hohenberg–Kohn theorem
ⓘ
Kohn–Sham equations ⓘ |
| hasVariant |
current-density functional theory
ⓘ
finite-temperature density functional theory ⓘ spin-density functional theory ⓘ time-dependent density functional theory ⓘ |
| implementedIn |
ABINIT
ⓘ
CASTEP ⓘ CP2K ⓘ Gaussian ⓘ NWChem ⓘ ORCA ⓘ Quantum ESPRESSO ⓘ SIESTA ⓘ VASP ⓘ WIEN2k ⓘ |
| introducedBy |
Pierre Hohenberg
ⓘ
Walter Kohn ⓘ |
| introducedInYear | 1964 ⓘ |
| limitation |
approximate exchange–correlation functionals
ⓘ
difficulty describing strong correlation ⓘ self-interaction error ⓘ underestimation of band gaps with standard functionals ⓘ |
| nobelPrizeCategory | Chemistry ⓘ |
| nobelPrizeYear | 1998 ⓘ |
| solvedBy | self-consistent field procedure ⓘ |
| usedFor |
catalysis research
ⓘ
geometry optimization ⓘ materials design ⓘ molecular property prediction ⓘ solid-state physics calculations ⓘ spectroscopic property calculations ⓘ surface science studies ⓘ |
| usesApproximationType |
generalized gradient approximation
ⓘ
hybrid functional ⓘ local density approximation ⓘ meta-GGA functional ⓘ range-separated hybrid functional ⓘ van der Waals density functional ⓘ |
How these facts were elicited
The pipeline generated the facts above by prompting gpt-5.1 with this entity's name + description and the instruction below.
Instruction
You are a knowledge base construction expert. Given a subject entity and a description of it, return factual statements that you know for the subject as a JSON list of dictionaries(triples), where keys must be "subject", "predicate" and "object". The number of facts may be very high, between 25 to 50 or more, for very popular subjects. For less popular subjects, the number of facts can be very low, like 5 or 10. # Requirements - If you don't know the subject at all, return an empty list. - If the subject is not a named entity, return an empty list. - Include at least one triple where predicate is "instanceOf". - Do not get too wordy. - Separate several objects into multiple triples with one object.
Input
Subject: density functional theory Description of subject: Density functional theory is a quantum mechanical method for calculating the electronic structure and properties of many-body systems, widely used in physics, chemistry, and materials science.
Referenced by (6)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: density functional theory
linked to: density functional theory
linked to: density functional theory