Publications in Physics
J. Esparza, J.L. Lopez and J. Sesma:
Zeros of the Whittaker function associated to Coulomb Waves
IMA Journal of Applied Mathematics 63(1), 1999, pp. 71--88.
A. Cruz and J. Esparza and J. Sesma:
Zeros of the Hankel function of real order out of the principal
Journal of Computational and Applied Mathematics 37, 1991, pp. 89-99.
Keywords: Hankel function, zeros.
Zeros of the Hankel function of real order follow, as the order varies
continuously, trajectories across different Riemann sheets
of the complex plane. A discussion of the main features of these
trajectories is presented.