Charging the Superconformal Index

Understand

The superconformal index is an important invariant of superconformal field theories.

• In this note we refine the superconformal index by inserting the charge conjugation operator C.
• We construct a matrix integral for this charged index for N=4 SYM with SU(N) gauge group.
• The key ingredient for the construction is a "charged character," which reduces to Tr(C) for singlet representations of the gauge group.