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On solutions of the nonequilibrium x-ray edge problem

Bernd Braunecker
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Abstract

We rediscuss a nonequilibrium x-ray edge problem which in recent publications led to discrepancies between the results of the perturbative and of an extended Nozieres-De Dominicis approach. We show that the this problem results from an uncritical separation of momenta of the scattering potential, and we propose a corrected Nozieres-De Dominicis solution.

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Bernd Braunecker. 2002-11-22. On solutions of the nonequilibrium x-ray edge problem. https://doi.org/10.1103/physrevb.68.153104

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