  We investigate the dynamical charge response of the Anderson model viewed as
a quantum RC circuit. Applying a low-energy effective Fermi liquid theory, a
generalized Korringa-Shiba formula is derived at zero temperature, and the
charge relaxation resistance is expressed solely in terms of static
susceptibilities which are accessible by Bethe ansatz. We identify a giant
charge relaxation resistance at intermediate magnetic fields related to the
destruction of the Kondo singlet. The scaling properties of this peak are
computed analytically in the Kondo regime. We also show that the resistance
peak fades away at the particle-hole symmetric point.
