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Sufficient conditions for the existence of bound states in a central potential

Fabian Brau 2004 J. Phys. A: Math. Gen. 37 6687-6692   doi: 10.1088/0305-4470/37/26/006  Help

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Fabian Brau
Service de Physique Générale et de Physique des Particules Élémentaires, Groupe de Physique Nucléaire Théorique, Université de Mons-Hainaut, B-7000 Mons, Belgium
E-mail: fabian.brau@umh.ac.be

Abstract. We show how a large class of sufficient conditions for the existence of bound states, in non-positive central potentials, can be constructed. These sufficient conditions yield upper limits on the critical value, g(ell)c, of the coupling constant (strength), g, and of the potential, V(r) = −gv(r), for which a first ell-wave bound state appears. These upper limits are significantly more stringent than hitherto known results.

PACS numbers: 03.65.−w, 03.65.Ge, 02.30.Rz

Print publication: Issue 26 (2 July 2004)
Received 29 April 2004
Published 16 June 2004

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