Quark Matter in Neutron Star Mergers

中子星合并中的夸克物质

• 批准号: EP/Z000939/1
• 负责人: Alexander Haber
• 金额: $ 26.26万
• 依托单位: University of Southampton
• 依托单位国家: 英国
• 项目类别: Fellowship
• 财政年份: 2024
• 资助国家: 英国
• 起止时间: 2024 至 无数据
• 项目状态: 未结题
• 来源: https://gtr.ukri.org/projects?ref=EP%2FZ000939%2F1
• 关键词: Quark; Matter; Neutron; Star; Mergers

The existence and location of a first order phase transition from nuclear to deconfined quark matter are one of particle physics's mostexciting unanswered questions. With the discovery of gravitational waves from a binary neutron star merger in 2017 from the LIGOand VIRGO detectors, entirely new ways of investigating dense matter have emerged. Future third-generation gravitational-wavedetectors like the planned Einstein Telescope (ET) in Europe will be able to not only measure the inspiral but the actual merger of thestars. Only by improving the microscopic physics implemented in numerical simulations, we will be able to decode and constrain thegoverning forces of particle physics imprinted in the merger signal and unlock ET's full potential. This includes a proper treatment ofthe microscopic physics of chemical equilibration and deconfinement in quark matter. In previous works, the effects of the weakinteraction have been ignored, which dismisses important effects like bulk viscosity and phase conversion dissipation. The aim ofQUARKSTAR is to investigate, compute and provide all the necessary microscopic physics for the proper treatment of quark matter inmergers. The main focus is to provide the results in a way that they can be used by the merger community and implemented in futuresimulations. This might open a completely new pathway to the discovery of quark matter in dense matter.As an expert on microscopic physics, transport, and weak interaction processes in neutron star mergers, Dr. Alexander Haber will joinforces with the numerical general relativity group of Prof. Nils Andersson in Southampton. This ideal placement allows Dr. Haber toreceive all relevant training for his future academic career while presenting the ideal combination of knowledge from microscopicphysics to general relativity necessary to tackle the question of quark matter and deconfinement in neutron star mergers.

一阶从核能到固定夸克物质的一阶相变的存在和位置是粒子物理学中最激烈的未解决的问题之一。随着2017年从Ligoand Pirgo探测器发现了来自二进制中子恒星合并的引力波，已经出现了全新的研究密集物质的新方法。未来的第三代重力 - 波力 - 诸如欧洲计划中的爱因斯坦望远镜（ET）之类的重力 - 波力不仅能够衡量Inspiral，而且能够衡量当时的实际合并。只有通过改善数值模拟中实现的微观物理学，我们将能够解码并限制合并信号中印记的粒子物理学的控制力并解锁ET的全部潜力。这包括对夸克物质化学平衡和解解的微观物理学的适当处理。在以前的作品中，弱互动的影响被忽略了，这否认了重要的效果，例如散装粘度和相位转换耗散。 Quarkstar的目的是调查，计算和提供所有必要的微观物理，以适当处理夸克物质输体剂。主要的重点是以合并社区可以使用并实施未来概念的方式提供结果。这可能为在密集物质中发现夸克物质的发现打开了一个全新的途径。作为中子星星合并中的微观物理，运输和弱相互作用过程的专家，亚历山大·哈伯（Alexander Haber）博士将与南安普顿（Nils Andersson）的数字通用相对论小组合作。这个理想的安置使Haber Toreceive博士对他未来的学术生涯进行了所有相关培训，同时介绍了从显微镜物理学到所需的一般相对论的理想结合，以解决Neutron Star Merggers中的Quark Matter和Deconfinection。