Wigner approach to quantum dynamics simulations of the interacting carriers in disordered systems

Physica Status Solidi (B) Basic Research

Volumn 241, Issue 1, 2004, Pages 40-46

  Filinov, V ^a   Thomas, P ^b   Bonitz, M ^c   Fortov, V ^a   Varga, L ^d   Meier, T ^b  

^a RUSSIAN ACADEMY OF SCIENCES   (Russian Federation)

^b PHILIPPS UNIVERSITY MARBURG   (Germany)

^c UNIVERSITY OF ROSTOCK   (Germany)

^d Budapesti Muszakies GE   (Hungary)

Author keywords

[No Author keywords available]

Indexed keywords

COMPUTER SIMULATION; ELECTRIC CONDUCTIVITY; FOURIER TRANSFORMS; MOLECULAR DYNAMICS; MONTE CARLO METHODS; OPTOELECTRONIC DEVICES; STATISTICAL MECHANICS; THERMODYNAMICS;

COULOMB INTERACTION; QUANTUM DYNAMICS SIMULATION; QUANTUM PARTICLES; WIGNER-LOUVILLE TYPE EQUATIONS;

QUANTUM THEORY;

EID: 2342462281     PISSN: 03701972     EISSN: None     Source Type: Journal    
DOI: 10.1002/pssb.200303617     Document Type: Conference Paper

References (23)

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20. In fact, we observe negative values, although, the real part of the conductivity has to be positive. The reason are weakly damped oscillations with a period exceeding the scale t′ used in the calculation of the dynamics. To overcome this deficiency of our model one has to increase the time t′ and/or to take into account the slow motion of the heavy particles, which will destroy the coherent oscillations of the light electrons trapped by the heavy particles. Additional calculations with increased t′ lead to decreasing negative contributions for low frequencies, as expected.
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