Spin susceptibility of spin-1/2 fermions with dipole interactions

The general form of the spin susceptibility is found for spin- 1/2 fermions with dipole interactions. In the paramagnetic phase and partially magnetized phase (ferro-nematic) the spin susceptibility is explicitly computed in the Random Phase Approximation. Important modifications to the static susceptibility are discussed which are relevant for future experiments. Unconventional collective modes in the paramagnetic and ferro-nematic phases are also discussed.