On solvable models of type IIB superstring in NS-NS and R-R plane wave backgrounds
Abstract
We consider type-IIB string in the two plane-wave backgrounds which may be interpreted as special limits of the AdS3 × S3 supported by the NS-NS or R-R 3-form backgrounds. The NS-NS plane-wave string model is equivalent to a direct generalization of the Nappi-Witten model, with its spectrum being similar to that of strings in constant magnetic field. The R-R model can be solved in the light-cone gauge, where the Green-Schwarz world-sheet theory reduces to a system of free fields: 4 massive and 4 massless copies of bosons and fermions. We describe the string spectra of the two models and study the associated asymptotic density of states. We also discuss a more general class of exactly solvable plane-wave models with reduced or completely broken supersymmetry which are obtained by adding twists in two spatial 2-planes.
- Publication:
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Journal of High Energy Physics
- Pub Date:
- April 2002
- DOI:
- 10.1088/1126-6708/2002/04/021
- arXiv:
- arXiv:hep-th/0202179
- Bibcode:
- 2002JHEP...04..021R
- Keywords:
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- High Energy Physics - Theory
- E-Print:
- 36 pages, harvmac. v2: discussion of equivalence of the supergravity parts of the spectra of the NS-NS and R-R models added in sect.5.3