Charged particle scattering problem with a complex-range Gaussian basis

  • D. A. SailaubekEmail author
  • O. A. Rubtsova
  • V. I. Kukulin
Regular Article - Theoretical Physics


A new approach towards solving quantum scattering problems with a short-range interaction and repulsive Coulomb interaction is introduced on the base of the Coulomb wave-packet formalism. The formalism allows to construct a finite-dimensional spectral expansion for the pure Coulomb resolvent and the resolvent for the Coulomb distorted short-range interaction as well. The above Coulomb wave-packet states can be approximated via the so-called complex-range Gaussian basis which is shown to be very convenient for practical calculations in continuum. As a result, the off-mass-shell elements of the Coulomb-nuclear t-matrix are found in a wide energy region from diagonalisation procedures for the total and Coulomb Hamiltonian matrices on the basis presented. The method is illustrated by few examples for calculations of partial amplitudes for local potentials and non-local coupled-channel interaction caused by an intruder state.


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Copyright information

© SIF, Springer-Verlag GmbH Germany, part of Springer Nature 2018

Authors and Affiliations

  • D. A. Sailaubek
    • 1
    Email author
  • O. A. Rubtsova
    • 2
  • V. I. Kukulin
    • 2
  1. 1.Faculty of Physics and Technical SciencesGumilyov Eurasian National UniversityAstanaKazakhstan
  2. 2.Skobeltsyn Institute of Nuclear PhysicsMoscow State UniversityMoscowRussia

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