| Affiliation: | 1.CNRS and Laboratoire de Mathématiques,Université Paris-Sud - Bat 425,Orsay Cedex,France;2.Fakult?t für Mathematik,Universit?t Wien,Vienna,Austria;3.Institut für Theoretische Chemie,Universit?t Wien,Vienna,Austria;4.The Erwin Schr?dinger International Institute for Mathematical Physics,Vienna,Austria;5.Mathematisches Institut,Universit?t München,Munich,Germany;6.Department of Mathematical Sciences,University of Aarhus,Aarhus C,Denmark;7.Department of Mathematical Sciences,Aalborg University,Aalborg East,Denmark |
. For a 
which stems from a physical ground state we prove that 
for r ≥ 0. This article may be reproduced in its entirety for non-commercial purposes.