Basic principles of unified field theory

Abstract

In this paper the basic principles of Einstein's, Schrodinger's and Bonnor's unified field theory have been studied. Originally the field equations were given in terms of contracted curvature tensor R_μλ Here the relations are obtained between R_μλ and some other tensors like Einstein’s tensor, transposed tensor and tne tensor Tα^β[γα] and the field equations are modified in terms of these tensors. Incidentally it has been shown how these tensors are obtained in a number of ways in Ricci identities when the covariant differentiations are performed taking into consideration the nature of the indices.