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.
|Numero di pagine||6|
|Rivista||THE EUROPEAN PHYSICAL JOURNAL. C, PARTICLES AND FIELDS|
|Stato di pubblicazione||Published - 2005|
All Science Journal Classification (ASJC) codes
- Engineering (miscellaneous)
- Physics and Astronomy (miscellaneous)