[lammps-users] about compute group/group

Dear LAMMPS users,

I am trying to compute the force between two groups using compute group/group. The pair style I use is CH.airebo. But it said

ERROR: Pair style does not support compute group/group

can somebody give me some suggestions? thanks


Many body pair potentials that involve
interactions between 3,4,N atoms in a force
calculation give that error message. What
does it mean to calculate force between 2 groups
of atoms when those kinds of terms exist
in the force field? LAMMPS doesn't know and
neither do I.