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X-ray-edge singularity in nonequilibrium systems

Authors Tai-Kai Ng
Issue Date 1995
Source Physical Review B, v. 51, (3), January 1995
Summary We consider how x-ray-edge singularity modification occurs in a class of nonequilibrium systems with more than one Fermi sea at different chemical potentials coupled to one other. The problem is solved by generalizing the Noziéres–De Dominicis solution for equilibrium systems to the present nonequilibrium situation. We find a much stronger orthogonality catastrophe effect associated with potential differences between different Fermi seas. Some consequences of the present result are considered.
ISSN 1098-0121
Rights © 1995 American Physical Society
Language English
Format Article
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