Pure Gauge
A pure gauge is the set of field configurations obtained by a gauge transformation on the null field configuration. So it is a particular "gauge orbit" in the field configuration's space.
In the abelian case, where, the pure gauge is the set of field configurations for all f(x).
Read more about this topic: Regauging
Famous quotes containing the word pure:
“There seems to be a kind of order in the universe, in the movement of the stars and the turning of the earth and the changing of the seasons, and even in the cycle of human life. But human life itself is almost pure chaos. Everyone takes his stance, asserts his own rights and feelings, mistaking the motives of others, and his own.”
—Katherine Anne Porter (18901980)