  We investigate the impact of pairing correlations on neutrino transport in
stellar matter. Our analysis is extended to nuclear matter conditions where
large density fluctuations develop, associated with the onset of the
liquid-vapor phase transition, and clustering phenomena occur. Within a
thermodynamical treatment, we show that at moderate temperatures, where pairing
effects are still active, the scattering of neutrinos in the nuclear medium is
significantly affected by pairing correlations, which increase the neutrino
trapping, thus modifying the cooling mechanism, by neutrino emission, of
neutron stars.
