Constraint relations in two-tensor gravity

A 3 + 1-dimensional decomposition is made of a two-tensor theory of gravity proposed by Salam et al. It is found that the gauge invariance roles of the two tensors are very symmetric, so that the massiveness or masslessness of the fields is ambiguous. Constraint equations are derived by elimination of gauge variables. The form of the constraints casts doubt on the sign of the total energy of the theory.