Codimension-two holography Original Research Article

A holographic interpretation for some specific Ricci-flat string backgrounds of the form A6×C4 is proposed. The conjecture is that there is a four-dimensional Euclidean conformal field theory (ECFT) defined on a codimension two submanifold of the manifold A6 (where one of the two remaining holographic coordinates of A6 is timelike, and the other one spacelike), with central charge proportional to the radius of curvature of the six-dimensional manifold, c∼l4.