pair_style coul/long/soft

Given that the shape of the curve does not match exactly the shape expected by the ewald (or other long range solver) is there expected to be an energy discontinuity at the cutoff distance?

thanks much
matthew

Given that the shape of the curve does not match exactly the shape
expected by the ewald (or other long range solver) is there expected to be
an energy discontinuity at the cutoff distance?

​not more than for coul/long. the point of using ewald summation is to
dampen the coulomb in real space so much that at the cutoff the
energy/force is negligible and then add what was subtracted away to the sum
of interactions computed in reciprocal space (which has the nice side
effect, that the kspace sum converges more quickly).

​axel.​