Superparticle and superstring in AdS(3)xS(3) Ramond-Ramond background in the light-cone gauge

We discuss superparticle and superstring dynamics in AdS(3)xS(3) supported by R-R 3-form background using light-cone gauge approach. Starting with the superalgebra psu(1,1\2)+(psu) over tilde (1,1\2) representing the basic sy mmetry of this background we find the light-cone superparticle Hamiltonian. We determine the harmonic decomposition of light-cone superfield describin g fluctuations of type IIB supergravity fields expanded near AdS(3)xS(3) ba ckground and thus the corresponding Kaluza-Klein spectrum. We fix the fermi onic and bosonic light-cone gauges in the covariant Green-Schwarz AdS(3)xS( 3) superstring action and find the corresponding light-cone string Hamilton ian. We also obtain a realization of the generators of psu(1,1\2)+(psu) ove r tilde (1,1\2) in terms of the superstring 2-d fields in the light-cone ga uge. (C) 2001 American Institute of Physics.