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arXiv 2210.01622hep-phhep-exhep-th
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电磁探针:理论与实验

Electromagnetic Probes: Theory and Experiment

Ralf-Arno Tripolt, Frank Geurts

摘要:

本文综述了重离子碰撞中电磁探针的研究现状。重点是热光子和双轻子,它们提供了对所产生的热和致密物质的性质的独特见解。这篇评论的目的是提供一个介绍性的概述,以及最近的理论和实验结果的讨论。特别地,我们讨论了矢量介子谱函数在光子和双轻子速率计算中的作用,并给出了从不同框架中获得的最新结果。此外,我们将强调光子和双轻子的特殊作用,提供有关可观测量的信息,如温度,寿命,极化和所产生的介质的电导率,以及它们的使用,以了解手征对称性恢复和相变。

英文摘要:

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.

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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