2005/06/28 by Luca Marotta, Fabio Siringo · 1 citation
Physics and Astronomy · #hep-ph
paper · pdf · doi:10.1140/epjc/s2005-02358-x
published as Eur.Phys.J.C44:293-298,2005 · 5 ps figures
arxiv created 2005/06/28 · arxiv updated 2009/12/01
A variational method is studied based on the minimum of energy variance. The method is tested on exactly soluble problems in quantum mechanics, and is shown to be a useful tool whenever the properties of states are more relevant than the eigenvalues. In quantum field theory the method provides a consistent second order extension of the gaussian effective potential.