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Thermodynamic Functions and Self‐Energy of Interacting Coulombic Systems. Numerical Results
Author(s) -
Rösler M.,
Stolzmann W.
Publication year - 1986
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.2221370118
Subject(s) - degeneracy (biology) , excited state , plasma , physics , function (biology) , energy (signal processing) , wave function , self energy , atomic physics , quantum mechanics , electron , bioinformatics , evolutionary biology , biology
The thermodynamics of multicomponent plasmas is investigated using a theoretical description where the free energy as a function of density and temperature is the basic quantity. The correlation contribution to the free energy and the chemical potential as well as the excess pressure (exchange plus correlation) are calculated at arbitrary degeneracy by summation over the complex Matsubara frequencies. With increasing degeneracy the numerical effort may be reduced with the help of the large wave‐number approximation or plasmon—pole expressions for the dielectric function. The temperature dependent self‐energy is calculated in the same way. Numerical results are given for the electron system, a hydrogen plasma, and for the electron—hole plasma in highly excited semiconductors.