title: Effect of a magnetic flux line on the quantum beats in the Henon-Heiles level density.
abstract: The quantum density of states of the Henon-Heiles potential displays a pronounced beating pattern. This has been explained by the interference of three isolated classical periodic orbits with nearby actions and periods. A singular magnetic flux line, passing through the origin, drastically alters the beats even though the classical Lagrangian equations of motion remain unchanged. Some of the changes can be easily understood in terms of the Aharonov-Bohm effect. However, we find that the standard periodic orbit theory does not reproduce the diffraction-like quantum effects on those classical orbits which intersect the singular flux line, and argue that corrections of relative order variant Planck's over 2pi are necessary to describe these effects. We also discuss the changes in the distribution of nearest-neighbor spacings in the eigenvalue spectrum, brought about by the flux line. (c) 1995 American Institute of Physics.
authors.affiliation: Institute for Theoretical Physics, University of Regensburg, D-93040 Regensburg, GermanyDepartment of Physics and Astronomy, McMaster University, Hamilton L8S 4M1, CanadaDepartment of Physics, University of Guelph, Guelph, Ontario N1G 2W1, CanadaInstitute for Theoretical Physics, University of Regensburg, D-93040 Regensburg, GermanyInstitute of Mathematical Sciences, Madras 600 113, India.
authors.forename: M.
authors.initials: M
authors.lastname: Brack
authors.forename: R. K.
authors.initials: RK
authors.lastname: Bhaduri
authors.forename: J.
authors.initials: J
authors.lastname: Law
authors.forename: Ch.
authors.initials: C
authors.lastname: Maier
authors.forename: M. V. N.
authors.initials: MV
authors.lastname: Murthy