  We calculate and study the general superconformal index for the 6d U(N) (2,0)
theory with four chemical potentials, from the indices of gauge theories on
CP^2 x R. Our index agrees with the large N supergravity index on AdS_7 x S^4
at low energies, and also yields the negative 'Casimir energy' with an N^3
scaling which was recently calculated from a QFT on S^5. Our approach also
suggests a systematic study of the (1,0) superconformal indices.

High Energy Physics - Theory