Holography for N = 4 on RP ⁴

We propose a holographic description of N = 4 super Yang-Mills on the four-dimensional real projective space RP⁴. We first construct the dual background in the framework of five-dimensional N = 8 gauged supergravity, and then uplift it to a new one-half BPS solution of type IIB supergravity. A salient feature of our solution is the presence of a bulk naked singularity whose local behavior resembles that of an O1₋ plane in flat space.