论文标题
电磁探针：理论和实验
Electromagnetic Probes: Theory and Experiment
论文作者
论文摘要
我们回顾了重型离子碰撞背景中电磁探针的当前研究状态。重点是热光子和二甲制子，这些光子和障碍可以为引起的热和密集物质的特性提供独特的见解。这篇评论旨在提供该主题的介绍性概述，并讨论最近的理论和实验结果。特别是，我们讨论了矢量 - 膜光谱函数在光子和DILEPTON速率计算中的作用，并提出了从不同框架获得的最新结果。此外，我们将重点介绍光子和障碍者的特殊作用，以提供有关可观察到的信息，例如温度，寿命，极化和产生培养基的电导率，以及它们用于了解手性对称性恢复和相位过渡的信息。
We review the current state of research on electromagnetic probes in the context of heavy-ion collisions. The focus is on thermal photons and dileptons which provide unique insights into the properties of the created hot and dense matter. This review is intended to provide an introductory overview of the topic as well as a discussion of recent theoretical and experimental results. In particular, we discuss the role of vector-meson spectral functions in the calculation of photon and dilepton rates and present recent results obtained from different frameworks. Furthermore, we will highlight the special role of photons and dileptons to provide information on observables such as the temperature, the lifetime, the polarization and the electrical conductivity of the produced medium as well as their use to learn about chiral symmetry restoration and phase transitions.
