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X-ray-edge singularity in nonequilibrium systems

Authors Ng, T.-K.
Issue Date 1995
Source Physical Review B, v. 51, (3), 1995, p. 2009-2012
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. © 1995 The American Physical Society.
ISSN 0163-1829
Rights Physical Review, B © copyright (1995) American Physical Society. The Journal's web site is located at
Language English
Format Article
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