ArticleJournal of statistical physics2025
Density-Functional Theory for the Dicke Hamiltonian.
Article in Journal of statistical physics, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.
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2 citing papers in PubMed.
- Quantum-Electrodynamical Time-Dependent Density Functional Theory Description of Molecules in Optical Cavities.Journal of chemical theory and computation · 2026Article
- Quantum-Electrodynamical Density-Functional Theory Exemplified by the Quantum Rabi Model.The journal of physical chemistry. A · 2025Article
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4 authors.
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Abstract
A detailed analysis of density-functional theory for quantum-electrodynamical model systems is provided. In particular, the quantum Rabi model, the Dicke model, and a generalization of the latter to multiple modes are considered. We prove a Hohenberg-Kohn theorem that manifests the magnetization and displacement as internal variables, along with several representability results. The constrained-search functionals for pure states and ensembles are introduced and analyzed. We find the optimizers for the pure-state constrained-search functional to be low-lying eigenstates of the Hamiltonian and, based on the properties of the optimizers, we formulate an adiabatic-connection formula. In the reduced case of the Rabi model we can even show differentiability of the universal density functional, which amounts to unique pure-state
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