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Schrödinger formulation of the nondipole light-matter interaction consistent with relativity

Førre, Morten; Selstø, Sølve
Journal article, Peer reviewed
Published version
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URI
https://hdl.handle.net/11250/2738953
Date
2020
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  • Department of Physics and Technology [2289]
  • Registrations from Cristin [12896]
Original version
Physical Review A. 2020, 101, 063416   https://doi.org/10.1103/PhysRevA.101.063416
Abstract
An alternative and powerful Schrödinger-like equation for describing beyond dipole laser-matter interactions and leading relativistic corrections is derived. It is shown that this particular formulation is numerically very efficient with respect to computational effort and convergence rate of the solutions. Furthermore, its nonrelativistic form turns out to be more compatible with relativity than what seems to be the case with the more common formulations of the nonrelativistic light-matter interaction. Moreover, the extension of this interaction form into the relativistic region preserves, to a large extent, the numerical efficiency. In this work, the formulation is applied to study beyond dipole corrections and relativistic corrections in multiphoton ionization of a hydrogen atom in the x-ray regime.
Publisher
American Physical Society
Journal
Physical Review A (PRA)
Copyright
Copyright 2020 American Physical Society

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