PACS:

A T-matrix many-particle theory for coherently coupled superlattice optics
T. Schmielaua, M.F. Pereira Jrb,*, and K. Hennebergera

aFachbereich Physik, Universitat Rostock, D-18051 Rostock, Germany
bInstituto de Fisica, Universidade Federal da Bahia, 40210-340, Salvador BA Brazil

Abstract. The high- order Coulomb correlations described by T-matrix diagrams in both carrier occupation and polarization functions are studied here with a Keldysh- Green’s Functions formalism. Numerical applications for low dimensional semiconductor systems illustrate the relevance of the effects and their importance for realistic nonlinear optical spectra calculations. A frequency and momentum resolved numerical demonstration of the Mott transition at the T-matrix level is presented.
Keywords: semiconductors, superlattices, T-matrix, many body effects, Green’s functions.
Paper received 12.02.04; accepted for publication 00.00.00.

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