LAMMPS QEq FIRE

The only reason this would happen is that you are using “pair_style reax/c”. Note that qeq/reax is still required for pair_style reax/c.

qeq/fire is an advanced charge solver that uses the point charge model, while ReaxFF uses a shielded Coulomb charge model. It won’t be appropriate to use a different charge model for ReaxFF.

Ray