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arXiv 1907.00992hep-th
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N=4 SYM的AdS振幅和双迹谱的弦修正

String corrections to AdS amplitudes and the double-trace spectrum of N=4 SYM

J. M. Drummond, D. Nandan, H. Paul, K. S. Rigatos

摘要:

在超引力极限下,考虑了对$\mathcal{N}=4$超Yang-Mills理论中半BPS算符的四点算符的$α'$修正.通过要求在平坦空间极限的正确行为,我们发现,领先的$(α')^3$修正梅林振幅是固定的任意收费的外部运营商。通过考虑双迹算子的混合,我们可以找到对双迹谱的$(α')^3$修正,并对$su(4)$ -单态算子给出了这种修正。我们观察到惊人的模式,在光谱的修正,暗示他们共同的十维起源。通过扩展所观察到的模式,并将它们施加在$(α')^5$阶,我们能够再现最近发现的结果,用于校正$\langle \mathcal{O}_2 \mathcal{O}_2 \mathcal{O}_p \mathcal{O}_p \rangle$振荡器的梅林振幅。通过将类似的逻辑应用于$su(4)$的$[0,1,0]$通道,我们能够推导出$\langle \mathcal{O}_2 \mathcal{O}_3 \mathcal{O}_{p-1} \mathcal{O}_p \rangle$形式的分解子的新结果。

英文摘要:

We consider $α'$ corrections to four-point correlators of half-BPS operators in $\mathcal{N}=4$ super Yang-Mills theory in the supergravity limit. By demanding the correct behaviour in the flat space limit, we find that the leading $(α')^3$ correction to the Mellin amplitude is fixed for arbitrary charges of the external operators. By considering the mixing of double-trace operators we can find the $(α')^3$ corrections to the double-trace spectrum which we give explicitly for $su(4)$-singlet operators. We observe striking patterns in the corrections to the spectra which hint at their common ten-dimensional origin. By extending the observed patterns and imposing them at order $(α')^5$ we are able to reproduce the recently found result for the correction to the Mellin amplitude for $\langle \mathcal{O}_2 \mathcal{O}_2 \mathcal{O}_p \mathcal{O}_p \rangle$ correlators. By applying a similar logic to the $[0,1,0]$ channel of $su(4)$ we are able to deduce new results for the correlators of the form $\langle \mathcal{O}_2 \mathcal{O}_3 \mathcal{O}_{p-1} \mathcal{O}_p \rangle$.

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