Soviet Physics Uspekhi
Quantum Nyquist formula and the applicability ranges of the Callen–Welton formula
Виталий Л. Гинзбург, Лев П. Питаевский
Abstract
We discuss Yu. L. Klimontovich's objections to the generally accepted derivations of the fluctuation-dissipation theorem and his proposed additional restrictions on the applicability of this theorem. We demonstrate that Yu. L. Klimontovich's arguments contradict the basic principles of statistical physics and hence cannot be correct.