  We have numerically studied a liquid composed of achiral, bent-shaped
molecules built of tangent spheres. The system is known to spontaneously break
mirror symmetry, as it forms a macroscopically chiral, twist-bend nematic phase
[Phys. Rev. Lett. 115, 147801 (2015)]. Here, we have examined the full phase
diagram of such liquid and observed several phases characterized by
orientational and/or translational ordering of molecules. Apart from
conventional nematic, smectic A, and the above-mentioned twist-bend nematic
phase, we have identified antiferroelectric smectic A phase. For large
densities and a high degree of molecule's structural bend, another smectic
phase emerged, where the polarization vector rotates within a single smectic
layer. These results were confirmed using both Monte Carlo and molecular
dynamics simulations.
