Abstract:
The optical conductivity of the Anderson impurity mode l
has been calculated by emp l oying the slave boson technique and
an expansion in powers of l i N, where N is the d egeneracy o f
the f electron level . This method has been used to find the
effective mass of the conduction electrons for temperatures
above and below the Kondo tempera ture. For low temperatures,
the mass enhancement is f ound to be large while a t high
t emperatures, the mass enhancement is sma ll. The conductivity
i s f ound to be Drude like with frequency dependent effective
mass and scattering time for low
independent effective mass and
temperatures and
scattering time
f requency
for high
t emperatures. The behavior of both the effective mass and the
conductivity is in qualitative agreement with experimental
r esul t s .
