Higher-twist fermionic operators and DIS structure functions from the AdS/CFT duality

Oct 14, 2020
25 pages
Published in:
  • Phys.Rev.D 103 (2021) 10, 106012
  • Published: May 12, 2021
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Abstract: (APS)
The role of local higher-twist (τ>3) spin-1/2 fermionic operators of the strongly coupled N=4 supersymmetric Yang-Mills theory on the symmetric and antisymmetric deep inelastic scattering structure functions is investigated. The calculations are carried out in terms of the duality between N=4 SYM theory and type IIB supergravity on AdS5×S5. Particularly, we explicitly obtain the structure functions for single-trace spin-1/2 fermionic operators in the 20* and 60* irreducible representations of SU(4)R, corresponding to twists 4 and 5, respectively. We also calculate the contributions of other single-trace spin-1/2 fermionic operators in the 4, 20 and 60 irreducible representations of SU(4)R. New important effects are found in comparison with the minimal twist (τ=3) case, and they are studied thoroughly.
Note:
  • 36 pages, 7 figures
  • String theory, quantum gravity, gauge/gravity duality
  • fermion: operator
  • deep inelastic scattering: structure function
  • supersymmetry: 4
  • higher-twist
  • AdS/CFT correspondence
  • strong coupling
  • supergravity: Type IIB
  • group: representation
  • AdS(5) x S(5)