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Quasiclassical Green function and Delbruck scattering in a screened Coulomb field

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arxiv hep-th/9502004 v1 pith:CLAKM6NJ submitted 1995-02-01 hep-th

Quasiclassical Green function and Delbruck scattering in a screened Coulomb field

classification hep-th
keywords fieldfunctiongreenquasiclassicalcoulombdelbruckscatteringscreened
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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A simple integral representation is derived for the quasiclassical Green function of the Dirac equation in an arbitrary spherically-symmetric decreasing external field. The consideration is based on the use of the quasiclassical radial wave functions with the main contribution of large angular momenta taken into account. The Green function obtained is applied to the calculation of the Delbruck scattering amplitudes in a screened Coulomb field.

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