GENERALIZED HOHENBERG-KOHN THEOREM AND EFFECTIVE HAMILTONIAN OF A QUANTUM SYSTEM

[摘要] It is proved that, for quantum systems with a nondegenerate ground state, there exists a one-to-one mapping in the Hohenberg-Kohn sense between any subset of thc sets of parameters (functions) characterizing the Hamiltonian and a corresponding set of correlation functions that characterize the ground state of the system. Using this result, we study the problem of constructing an effective Hamiltonian out of known ground-state properties of a quantum system.

[关键词] DENSITY-FUNCTIONAL THEORY