期刊
JOURNAL OF HIGH ENERGY PHYSICS
卷 -, 期 7, 页码 -出版社
SPRINGER
DOI: 10.1007/JHEP07(2014)156
关键词
Strong Coupling Expansion; Integrable Field Theories; Supersymmetric gauge theory; AdS-CFT Correspondence
资金
- European Union under REA Grant [317089]
- STFC [ST/J002798/1]
- [RFBR-12-02-00351-a]
- [PICS-12-02-91052]
- Science and Technology Facilities Council [ST/J002798/1, ST/G000395/1] Funding Source: researchfish
- STFC [ST/J002798/1, ST/G000395/1] Funding Source: UKRI
We apply the recently proposed quantum spectral curve technique to the study of twist operators in planar N = 4 SYM theory. We focus on the small spin expansion of anomalous dimensions in the sl(2) sector and compute its first two orders exactly for any value of the 't Hooft coupling. At leading order in the spin S we reproduced Basso's slope function. The next term of order S-2 structurally resembles the Beisert-Eden-Staudacher dressing phase and takes into account wrapping contributions. This expansion contains rich information about the spectrum of local operators at strong coupling. In particular, we found a new coefficient in the strong coupling expansion of the Konishi operator dimension and confirmed several previously known terms. We also obtained several new orders of the strong coupling expansion of the BFKL, pomeron intercept. As a by-product we formulated a prescription for the correct analytical continuation in S which opens a way for deriving the BFKL regime of twist two anomalous dimensions from AdS/CFT integrability.
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