String corrections to AdS amplitudes and the double-trace spectrum of $$ \mathcal{N} $$ = 4 SYM
String corrections to AdS amplitudes and the double-trace spectrum of $$ \mathcal{N} $$ = 4 SYM
We consider $\alpha'$ corrections to four-point correlators of half-BPS operators in $\mathcal{N}=4$ super Yang-Mills theory in the supergravity limit. By demanding the correct behaviour in the flat space limit, we find that the leading $(\alpha')^3$ correction to the Mellin amplitude is fixed for arbitrary charges of the external operators. By …