Solution of relativistic quantum optics problems using clusters of graphical processing units

Journal Article · Sun Jun 15 00:00:00 EDT 2014 · Journal of Computational Physics

DOI:https://doi.org/10.1016/J.JCP.2014.02.028· OSTI ID:22314868

Hafizi, B.; Helle, M. H.

Numerical solution of relativistic quantum optics problems requires high performance computing due to the rapid oscillations in a relativistic wavefunction. Clusters of graphical processing units are used to accelerate the computation of a time dependent relativistic wavefunction in an arbitrary external potential. The stationary states in a Coulomb potential and uniform magnetic field are determined analytically and numerically, so that they can used as initial conditions in fully time dependent calculations. Relativistic energy levels in extreme magnetic fields are recovered as a means of validation. The relativistic ionization rate is computed for an ion illuminated by a laser field near the usual barrier suppression threshold, and the ionizing wavefunction is displayed.

• OSTI ID: 22314868
• Journal Information: Journal of Computational Physics, Vol. 267; Other Information: Copyright (c) 2014 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA); ISSN 0021-9991
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
CALCULATION METHODS
COULOMB FIELD
ENERGY LEVELS
IONIZATION
LASER RADIATION
MAGNETIC FIELDS
NUMERICAL SOLUTION
OPTICS
OSCILLATIONS
PERFORMANCE
POTENTIALS
RELATIVISTIC RANGE
TIME DEPENDENCE
WAVE FUNCTIONS