Absorption-edge singularities for a nonequilibrium Fermi sea. III. Determinantal nonperturbative theory
Journal Article
·
· Physical Review, B: Condensed Matter
- France Telecom, Centre National d`Etudes des Telecommunications, Paris B, Laboratoire de Bagneux, Boite Postale 107, 92225 Bagneux Cedex (France)
- Groupe de Physique des Solides, Universite Pierre et Marie Curie, CNRS, Tour 23, 2 place Jussieu, 75005 Paris (France)
The nonperturbative solution to the problem of threshold singularities for a ({mu}{sub 1},{mu}{sub 2}) nonequilibrium Fermi sea is obtained using the determinantal method of Ohtaka and Tanabe. The critical exponents of the absorption power-law behavior we find agree with those estimated from the perturbative treatment of the problem given in papers I and II. A family of possibly diverging singularities is found at energies {mu}{sub 2}+{ital n}({mu}{sub 1}{minus}{mu}{sub 2}), for {ital n}{ge}1.
- OSTI ID:
- 122348
- Journal Information:
- Physical Review, B: Condensed Matter, Journal Name: Physical Review, B: Condensed Matter Journal Issue: 16 Vol. 52; ISSN PRBMDO; ISSN 0163-1829
- Country of Publication:
- United States
- Language:
- English
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