Authors
Citation
C. Tanguy et M. Combescot, ABSORPTION-EDGE SINGULARITIES FOR A NONEQUILIBRIUM FERMI SEA .3. DETERMINANTAL NONPERTURBATIVE THEORY, Physical review. B, Condensed matter, 52(16), 1995, pp. 11698-11710
Citations number
9
Categorie Soggetti
Physics, Condensed Matter
Journal title
ISSN journal
01631829
Volume
52
Issue
16
Year of publication
1995
Pages
11698 - 11710
Database
ISI
SICI code
0163-1829(1995)52:16<11698:ASFANF>2.0.ZU;2-6
Abstract
The nonperturbative solution to the problem of threshold singularities
for a (mu(1),mu(2)) nonequilibrium Fermi sea is obtained using the de
terminantal 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(2)
+n(mu(1)-mu(2)), for n greater than or equal to 1.