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arXiv 0912.1641hep-thhep-ph
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AdS中激波引起的DIS中的粒子产生

Particle production in DIS off a shockwave in AdS

Fabio Dominguez

摘要:

在AdS/CFT对应中,激波度规被广泛用作快速运动核的引力对偶。在这里,我们提出了一个图片的粒子产生的深层非弹性散射的冲击波与弹丸所代表的$\mathcal{R}$ -电流。通过使用\cite{Avsar:2009xf}中开发的方法来找到散射场的显式表达式,我们能够表明,散射场可以写在类时和类空真空态,其中类时状态与出射粒子相同。为了支持这一观点,我们计算了类时模式对散射场的能量动量张量的贡献,并表明第五维中的能量流与作用的虚部直接相关。第五维中的能量流也与输入的能量流进行比较,以确定初始能量的哪一部分流向了所产生的粒子。最后两个部分致力于在动量和坐标空间中定位能量流,首先通过找到对总流贡献最大的虚拟,其次通过找到坐标空间中的近似轨迹。

英文摘要:

Within the AdS/CFT correspondence, the shockwave metric has been widely used as a gravity dual for a fast moving nucleus. Here we propose a picture for particle production in deep inelastic scattering off a shockwave with the projectile represented by the $\mathcal{R}$-current. By using the method developed in \cite{Avsar:2009xf} to find an explicit expression for the scattered field, we are able to show that the scattered field can be written in terms of time-like and space-like vacuum states where the time-like states are identified with the outgoing particles. To support this picture, we calculate the contribution of the time-like modes to the energy-momentum tensor of the scattered field and show that the energy flow in the fifth dimension is directly related to the imaginary part of the action. The energy flow in the fifth dimension is also compared to the incoming energy flow to determine which fraction of the initial energy goes to the produced particles. The last two sections are devoted to localize the energy flow in momentum and coordinate space, first by finding the virtualities that contribute the most to the total flow, and second by finding an approximate trajectory in coordinate space.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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