BRST-exact operator
= BRST-exact operator
{c}
A BRST-exact operator has the form $O=QX$. It is BRST closed by nilpotence and represents the zero class in BRST cohomology.
= BRST-exact operator
{c}
A BRST-exact operator has the form $O=QX$. It is BRST closed by nilpotence and represents the zero class in BRST cohomology.