MESSIRDI, Bekkai; DJAA, Mustapha
(Annales Math matiques de l'Universit de Sidi Bel Abb s, 1997)
We study the spectrum of Schrodinger operator P (h) for a polyatomic molecul in the Born-Oppenheimer approximation where the mass ratio h2 of electronic to nuclear mass tends to zero. We prove that this study can be reduced ...