P.C. Kwok, T.D. Schultz
Physical Review B
A linked cluster theorem is demonstrated for the self-energy of the average Green function of one electron moving in a low concentration of randomly positioned spins. The self-energy differs from what has previously been assumed by a frequency-independent but temperature-dependent factor. © 1972.
P.C. Kwok, T.D. Schultz
Physical Review B
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Physical Review Letters
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