ON THE CLASSICAL STRING SOLUTIONS AND STRING/FIELD THEORY DUALITY II

Based on the recently considered classical string configurations, in the framework of the semiclassical limit of the string/gauge theory correspondence, we describe a procedure for obtaining exact classical string solutions in general string theory backgrounds, when the string embedding coordinates depend nonlinearly on the worldsheet spatial parameter. The tensionless limit, corresponding to small 't Hooft coupling on the field theory side, is also considered. Applying the developed approach, we first reproduce some known results. Then, we find new string solutions — with two spins in AdS 5 black hole background and in AdS 5× S 5 with two spins and up to nine independent conserved R-charges.