# 8.3: Variational Methods


8.6 Bogoliubov’s contribution to the Gibbs-Bogoliubov inequality

Show that the Gibbs-Bogoliubov inequality, which we derived in class for classical systems, also holds for quantal systems.

This page titled 8.3: Variational Methods is shared under a CC BY-SA license and was authored, remixed, and/or curated by Daniel F. Styer.