Pribram-Jones A, Grabowski PE, Burke K. Thermal Density Functional Theory: Time-Dependent Linear Response and Approximate Functionals from the Fluctuation-Dissipation Theorem.
Phys Rev Lett 2016;
116:233001. [PMID:
27341227 DOI:
10.1103/physrevlett.116.233001]
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Abstract
The van Leeuwen proof of linear-response time-dependent density functional theory (TDDFT) is generalized to thermal ensembles. This allows generalization to finite temperatures of the Gross-Kohn relation, the exchange-correlation kernel of TDDFT, and fluctuation dissipation theorem for DFT. This produces a natural method for generating new thermal exchange-correlation approximations.
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