发表机构
Indian Institute of Technology Kanpur; Indian Institute of Technology Bombay(坎普尔印度理工学院; 孟买印度理工学院)
机构由 AI 辅助整理,请以论文原文为准。AI 中文总结
本文在光前形式下研究胶子能量-动量张量的动量空间结构,提出胶子引力横向动量相关分布并建立其与twist-2/3 TMDs的联系,揭示其编码胶子平均四动量及强子内部压力与剪切信息。
AI 中文摘要
我们在光前形式中研究了自旋为0和自旋为1/2强子的规范不变胶子能量-动量张量(EMT)的动量空间结构。我们将非定域胶子EMT参数化为所谓的胶子引力横向动量相关分布(引力TMDs),并推导了它们与twist-2和twist-3胶子TMDs的联系。此外,我们证明了胶子EMT的特定分量编码了关于胶子平均动力学四动量和强子内部力学性质(如压力和剪切分布)的信息。
英文摘要
We investigate the momentum-space structure of the gauge-invariant gluon energy-momentum tensor (EMT) for spin-$0$ and spin-$\tfrac{1}{2}$ hadrons in the light-front formalism. We parameterize the nonlocal gluon EMT in terms of so-called gluon gravitational transverse-momentum-dependent distributions (gravitational TMDs) and derive their connections to twist-2 and twist-3 gluon TMDs. Moreover, we demonstrate that particular components of the gluon EMT encode information about the average kinetic four-momentum of gluons and the internal mechanical properties of hadrons-such as pressure and shear distributions.
Comments8 pages