Abstract
Inspired by the studies of gravitational waves in anti-de Sitter universe, in general relativity, in this Letter we investigate the possibility of similar solutions in IIB string theory on AdS3×S3×R4. We give a general form for such solutions in this background and present several explicit examples, by directly solving the field equations, as well as the ones obtained by taking a scaling limit on D1–D5 brane systems in a pp-wave background. The form of the metric in our solutions corresponds to a gravitational wave in AdS3. We show the supersymmetric nature of these solutions and discuss the possibility of their generalizations to other anti-de Sitter backgrounds, including the ones in four dimensions.
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