R. Brummelhuis et al., Stationary scattering in the semi-classical limit for a Schrodinger operator in a gauge field, J FUNCT ANA, 165(2), 1999, pp. 347-389
We study the classical limit of the stationary scattering theory for a Schr
odinger operator in a compactly supported gauge field. We show that, under
suitable hypotheses on the associated classical flow, the scattering amplit
ude has a complete asymptotic expansion in the semi-classical parameter, an
d we determine the main term of this expansion. (C) 1999 Academic Press.