Publications in Physics

Journals

1999

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.

1991

A. Cruz and J. Esparza and J. Sesma: Zeros of the Hankel function of real order out of the principal Riemann sheet
Journal of Computational and Applied Mathematics 37, 1991, pp. 89-99.
Keywords: Hankel function, zeros.
Abstract: 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.