Finally, it may also be of interest to investigate the applicability of lattice-sum methods (Ewald 124 or particle-mesh ) in AdSoS. These approaches would incorporate long-range effects (in an artificially periodic rather than mean-field fashion ), while formally eliminating the dependence of the results on a truncation cutoff, the selection of which is ambiguous. However, the choice of a real-space cutoff and, for particle-mesh methods, of a reciprocal-space grid spacing leading to fast convergence would remain problematic (different requirements for the FG and CG regions).