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arXiv 1309.1985hep-phgr-qchep-th
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分析性和更高的扭曲

Analyticity and higher twists

Oleg Teryaev

摘要:

提出了由虚康普顿振幅的解析性所隐含的DIS中高扭数(HT)塔的无限和的表示。它最简单的实现允许描述所有动量转移的比约肯求和规则。强调了在真空矩阵元的情况下,TMD可以容纳类似于非局部真空凝聚体的HT无穷塔。强子GPD中的D项与真空宇宙学常数具有某种相似性。D项的负号可以理解为通过引力子交换的暴胀和湮灭之间的相似性。

英文摘要:

The representation for infinite sum of higher twists (HT) tower in DIS implied by analyticity of virtual Compton amplitude is suggested. Its simplest realization allows to describe the Bjorken sum rule at all momentum transfers. It is stressed that TMDs accommodate the infinite tower of HT similar to non-local vacuum condensates for the case of vacuum matrix element. The D-term in hadronic GPDs bears some similarity to vacuum cosmological constant. The negative sign of D-term may be understood as a similarity between inflation and annihilation via the graviton exchange.

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