$g_{s}$-factor quenching with quantum statistics
  We discuss the effect of quantum statistics on the $g_{s}$-factor quenching in nuclear medium. We have found that the two nucleon correlation function can be described by a Gaussian with correlation length $\sigma\sim1.2$ fm. An estimate of the M1 quenching strength is given. The effect of quantum statistics on the retardation of the paramagnetic susceptibility is also discussed. 
S. Hamieh, and C. Bertulani