Stationary states of fermions in a sign potential with a mixed vector-scalar coupling
Nenhuma Miniatura disponível
Data
2014-01-01
Autores
Castilho, W. M. [UNESP]
Castro, A. S. de [UNESP]
Título da Revista
ISSN da Revista
Título de Volume
Editor
Elsevier B.V.
Resumo
The scattering of a fermion in the background of a sign potential is considered with a general mixing of vector and scalar Lorentz structures with the scalar coupling stronger than or equal to the vector coupling under the Sturm-Liouville perspective. When the vector coupling and the scalar coupling have different magnitudes, an isolated solution shows that the fermion under a strong potential can be trapped in a highly localized region without manifestation of Klein's paradox. It is also shown that the lonely bound-state solution disappears asymptotically as one approaches the conditions for the realization of spin and pseudospin symmetries. (C) 2013 Elsevier Inc. All rights reserved.
Descrição
Palavras-chave
Sign potential, Spin symmetry, Isolated solution, Effective mass
Como citar
Annals Of Physics. San Diego: Academic Press Inc Elsevier Science, v. 340, n. 1, p. 1-12, 2014.