Abstract
We discuss superparticle and superstring dynamics in AdS3×S3 supported by R–R 3-form background using light-cone gauge approach. Starting with the superalgebra psu(1,1|2)⊕psu∼(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 AdS3×S3 background and thus the corresponding Kaluza–Klein spectrum. We fix the fermionic and bosonic light-cone gauges in the covariant Green–Schwarz AdS3×S3 superstring action and find the corresponding light-cone string Hamiltonian. We also obtain a realization of the generators of psu(1,1|2)⊕psu∼(1,1|2) in terms of the superstring 2-d fields in the light-cone gauge.
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