POMULT - A PROGRAM FOR COMPUTING PERIODIC-ORBITS IN HAMILTONIAN-SYSTEMS BASED ON MULTIPLE SHOOTING ALGORITHMS

POMULT is a FORTRAN code for locating Periodic Orbits and Equilibrium Points in Hamiltonian systems based on 2-point boundary value solvers which use multiple shooting algorithms. The code has mainly been devel oped for locating periodic orbits in molecular Hamiltonian systems wit h many degrees of freedom and it utilizes a damped Newton-Raphson meth od and a secant method. The Graphical User Interface has also been wri tten in the tcl-tk script language for interactively manipulating the input and output data. POMULT provides routines for a general analysis of a dynamical system such as fast Fourier transform of the trajector ies, Poincare surfaces of sections, maximum Lyapunov exponents and eva luation of the classical autocorrelation functions and power spectra. (C) 1998 Elsevier Science B.V.