Autori: Dusan Popov

Editorial: International Journal of Quantum Chemistry, 69, p.159 - 165, 1998.

Rezumat:

In the present paper we have extended the quantum virial and
Hellmann-Feynman theorems to the quantum statistical averages, i.e.
to the thermal states. We have obtained some new formulae which
make possible to expressing the thermodinamical observables of the
system as functions of the moments of coordinate, as we see in a short
example relating to the pseudoharmonical oscillator.

Cuvinte cheie: quantum virial theorem, Hellmann-Feynman theorem, density