Dyon
= Dyon
{title2=$(q_e,q_m),\quad q_eq_m\ne0$}
{wiki}
A dyon carries both electric and magnetic charge. In an appropriate <extended supersymmetry> theory, a <BPS state> with these charges has mass fixed by their complex combination in the <central charge in supersymmetry>. Not every electrically and magnetically charged state must saturate that bound.