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Phys. Rev. A 68, 051402 (2003) [4 pages]

Optimized time-dependent perturbation theory for pulse-driven quantum dynamics in atomic or molecular systems

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D. Daems *
Center for Nonlinear Phenomena and Complex Systems, Université Libre de Bruxelles, Code Postal 231, 1050 Brussels, Belgium

S. Guérin and H. R. Jauslin
Laboratoire de Physique de l’Université de Bourgogne, UMR CNRS 5027, Boîte Postale 47870, 21078 Dijon, France

A. Keller and O. Atabek
Laboratoire de Photophysique Moléculaire du CNRS, Université Paris-Sud, Bâtiment 210, Campus d’Orsay, 91405 Orsay Cedex, France

 See Also: Publisher's Note

Rapid Communication Received 11 July 2003; published 24 November 2003; publisher error corrected 4 December 2003

We present a time-dependent perturbative approach adapted to the treatment of intense pulsed interactions. We show there is a freedom in choosing secular terms and use it to optimize the accuracy of the approximation. We apply this formulation to a unitary superconvergent technique and improve the accuracy by several orders of magnitude with respect to the Magnus expansion.


©2003 The American Physical Society

URL: http://link.aps.org/doi/10.1103/PhysRevA.68.051402
DOI: 10.1103/PhysRevA.68.051402
PACS: 42.50.Hz, 31.15.Md, 03.65.-w, 02.30.Mv

* Email address: ddaems@ulb.ac.be

See Also

Publisher's Note: D. Daems, S. Guerin, H.R. Jauslin, A. Keller, and O. Atabek, Publisher’s Note: Optimized time-dependent perturbation theory for pulse-driven quantum dynamics in atomic or molecular systems [Phys. Rev. A 68, 051402 (2003)], Phys. Rev. A 68, 069902 (2003)

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