Superparticle and superstring in AdS3xS3 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 symmetry of this background we find the light-cone superparticle Hamiltonian. We determine the harmonic decomposition of light-cone superfield describing fluctuations of type IIB supergravity fields expanded near AdS(3)xS(3) background and thus the corresponding Kaluza-Klein spectrum. We fix the fermionic and bosonic light-cone gauges in the covariant Green-Schwarz AdS(3)xS(3) superstring action and find the corresponding light-cone string Hamiltonian. We also obtain a realization of the generators of psu(1,1\2)+(psu) over tilde (1,1\2) in terms of the superstring 2-d fields in the light-cone gauge. (C) 2001 American Institute of Physics.