- 著者
- Hatta Yoshitaka Ueda Takahiro Xiao Bo-Wen
- 出版者
- IOP Publishing
- 雑誌
- The journal of high energy physics (ISSN:11266708)
- 巻号頁・発行日
- vol.2009, no.08, pp.007, 2009-08-05
- 被引用文献数
- 35 16
Using the AdS/CFT correspondence, we calculate the polarized structure functions in strongly coupled Script N = 4 supersymmetric Yang-Mills theory deformed in the infrared. We find that the flavor singlet contribution to the g1 structure function is vanishingly small, while the flavor non-singlet contribution shows the Regge behavior at small–x with an intercept slightly less than 1. We explicitly check that the latter satisfies the moment sum rule. We discuss the `spin crisis' problem and suggest that at strong coupling the spin of a hadron entirely comes from the orbital angular momentum.