Non-Lorentzian spectral functions for Coulomb quantum kinetics | Zendy

M. Bönitz | Zendy; D. Semkat | Zendy; H. Haug | Zendy

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Non-Lorentzian spectral functions for Coulomb quantum kinetics

Author(s) -

M. Bönitz,

D. Semkat,

H. Haug

Publication year - 1999

Publication title -

the european physical journal b

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.451

H-Index - 130

eISSN - 1434-6036

pISSN - 1434-6028

DOI - 10.1007/s100510050770

Subject(s) - inverse , coulomb , exponential function , trigonometric functions , hyperbolic function , physics , range (aeronautics) , conservation law , energy (signal processing) , electron , quantum , mathematics , function (biology) , exponential decay , mathematical analysis , quantum mechanics , materials science , geometry , evolutionary biology , composite material , biology

: Numerical solutions of the Kadanoff-Baym equations with self-energies in second Born approximation are presented for electrons in a bulk semiconductor. The results are used to analyze in detail the two-time spectral function .In particular, (I) the damping of the spectral function is investigated over a broad density range both, for low and high temperatures; (II), is compared to analytical expressions - an exponential and a recently proposed inverse hyperbolic cosine decay law; (III), the two analytical spectral functions are studied with respect to conservation of total energy, where for the inverse hyperbolic cosine an improved behavior is demonstrated.

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