Unifying temporal, Coulomb, and relativistic gauges

A gauge condition which allows one to get the temporal, Coulomb, and relativistic gauges as particular cases is considered. The ‘‘temporal’’-gauge limit is particularly interesting in the sense that the pole at $k_0$=0 is automatically regularized in a way which is different from the controversial principal-value prescription. This limit can be taken only at the end of the calculations and it leads to a non-negligible ghost contribution. A comparison with other approaches to the temporal gauge is also given.