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The analogue of Overhauser (particle-hole) pairing in electronic systems(spin-density waves with non-zero total momentum $Q$) is analyzed infinite-density QCD for 3 colors and 2 flavors, and compared to thecolor-superconducting BCS ground state (particle-particle pairing, $Q$=0). Thecalculations are based on effective nonperturbative four-fermion interactionsacting in both the scalar diquark as well as the scalar-isoscalar quark-hole('$\sigma$') channel. Within the Nambu-Gorkov formalism we set up the coupledchannel problem including multiple chiral density wave formation, and evaluatethe resulting gaps and free energies. Employing medium-modifiedinstanton-induced 't Hooft interactions, as applicable around $\mu_q\simeq 0.4$GeV (or 4 times nuclear saturation density), we find the 'chiral crystal phase'to be competitive with the color superconductor.Comment: 14 pages ReVTeX, including 11 ps-/eps-figure

Chiral crystal in cold QCD matter at intermediate densities?