2014年8月
Quantum Wronskian approach to six-point gluon scattering amplitudes at strong coupling
JOURNAL OF HIGH ENERGY PHYSICS
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- 巻
- 号
- 8
- 記述言語
- 英語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.1007/JHEP08(2014)162
- 出版者・発行元
- SPRINGER
We study the six-point gluon scattering amplitudes in N = 4 super YangMills theory at strong coupling based on the twisted Z(4)-symmetric integrable model. The lattice regularization allows us to derive the associated thermodynamic Bethe ansatz (TBA) equations as well as the functional relations among the Q-/T-/Y-functions. The quantum Wronskian relation for the Q-/T-functions plays an important role in determining a series of the expansion coefficients of the T-/Y-functions around the UV limit, including the dependence on the twist parameter. Studying the CFT limit of the TBA equations, we derive the leading analytic expansion of the remainder function for the general kinematics around the limit where the dual Wilson loops become regular-polygonal. We also compare the rescaled remainder functions at strong coupling with those at two, three and four loops, and find that they are close to each other along the trajectories parameterized by the scale parameter of the integrable model.
- リンク情報
- ID情報
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- DOI : 10.1007/JHEP08(2014)162
- ISSN : 1029-8479
- ORCIDのPut Code : 28370050
- Web of Science ID : WOS:000347894900001