FINITE-TEMPERATURE POWER ABSORPTION BY COLLECTIVE MODES IN UNCONVENTIONAL SUPERCONDUCTORS

We calculate the power absorption due to order parameter collective mo des in a superconducting state with E1g symmetry possibly applicable t o UPt3, using a matrix kinetic equation approach. Close to the critica l temperature, such features are observable as well-defined peaks in t he absorption. At lower temperatures, however, a broad feature conside rably larger than the normal state absorption is predicted.