HAL : in2p3-00605695, version 1
 arXiv : 1106.6123
 DOI : 10.4303/jpm/P111101
 Journal of Physical Mathematics 3 (2011) P111101
 Further developments for the auxiliary field method
 (2011)
 The auxiliary field method is a technique to obtain approximate closed formulae for the solutions of both nonrelativistic and semirelativistic eigenequations in quantum mechanics. For a many-body Hamiltonian describing identical particles, it is shown that the approximate eigenvalues can be written as the sum of the kinetic operator evaluated at a mean momentum $p_0$ and of the potential energy computed at a mean distance $r_0$. The quantities $p_0$ and $r_0$ are linked by a simple relation depending on the quantum numbers of the state considered and are determined by an equation which is linked to the generalized virial theorem. The (anti)variational character of the method is discussed, as well as its connection with the perturbation theory. For a nonrelativistic kinematics, general results are obtained for the structure of critical coupling constants for potentials with a finite number of bound states.
 Thème(s) : Physique/Physique Quantique
 Lien vers le texte intégral : http://fr.arXiv.org/abs/1106.6123
 in2p3-00605695, version 1 http://hal.in2p3.fr/in2p3-00605695 oai:hal.in2p3.fr:in2p3-00605695 Contributeur : Emmanuelle Vernay <> Soumis le : Lundi 4 Juillet 2011, 08:13:52 Dernière modification le : Mercredi 29 Février 2012, 08:38:44