de Castro, A. S.Hott, M.2014-05-202014-05-202004-01-01Ix Hadron Physics and Vii Relativistic Aspects of Nuclear Physics. Melville: Amer Inst Physics, v. 739, p. 696-698, 2004.0094-243Xhttp://hdl.handle.net/11449/9109Exact bounded solutions for a fermion subject to exponential scalar potential in 1 + 1 dimensions are found in closed form. We discuss the existence of zero modes which are related to the ultrarelativistic limit of the Dirac equation and are responsible for the induction of a fractional fermion number on the vacuum.696-698engTrabalho apresentado em evento10.1063/1.1843696WOS:000226476000106Acesso aberto5811700083195480