  Using the Dirac-Hartree-Fock-Bogoliubov approximation to study nuclear
pairing, we have found the short-range correlations of the Dirac $^1$S$_0$
pairing fields to be essentially identical to those of the two-nucleon virtual
state at all values of the baryon density. We make use of this fact to develop
a relativistic separable potential that correctly describes the pairing fields.
