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| Paper IPM / P / 14885 |
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We showed in previous work that for Yang-Baxter (YB) deformations of AdS5×S5, the open string metric and coupling, and as a result the closed string density e−2 Φ √g, remains undeformed. In this work we identify the Page forms as the open string counterpart for RR fields and demonstrate case by case that the non-zero Page forms remain invariant under YB deformations. We show that these results remain true, not only for homogenous YB deformations, but also for modified YB deformations associated with η-deformations. We give a physical meaning to the Killing vector I of generalized supergravity and show for all YB deformations: 1) I appears as a current for center of mass motion on the worldvolume of a D-branes probing the background, 2) I is equal to the divergence of the noncommutativity parameter, 3) I exhibits "holographic" behavior, where the radial component of I vanishes at the AdS boundary, and 4) in pure spinor formalism I is related to a certain state in the BRST cohomology.
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