The Universe in Light of Fundamental Physics

基础物理学中的宇宙

• 批准号: ST/L000717/1
• 负责人: Eugene Lim
• 金额: $ 5.51万
• 依托单位: King's College London
• 依托单位国家: 英国
• 项目类别: Research Grant
• 财政年份: 2014
• 资助国家: 英国
• 起止时间: 2014 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=ST%2FL000717%2F1
• 关键词: Universe; Light; Fundamental; Physics

Particle physics and cosmology are merging. In recent years, the cross-pollination of ideas between the fields has accelerated, fueled by the availability of a wealth of new raw astrophysical data and increased realization of the intimate theoretical connection between particle physics and cosmology. Now that the LHC is online, particle physics is returning the favour with high-quality data on the building-blocks of cosmology. With the coming release of data from the PLANCK satellite and many balloon experiments, the Advanced LIGO gravitational-wave detectors, the AMS-02 space-based particle detector, the Dark Energy Survey (DES), and many other experiments searching for dark matter, this cross-pollination of ideas and data is destined to continue.The scientific programme proposed here by the Theoretical Particle Physics and Cosmology (TPPC) Group in the Physics Department of King's College London is focused on the the analysis and interpretation of data from observational cosmology and high-energy astrophysics using insights from fundamental physics.Although the LHC now makes possible direct studies in the laboratory of fundamental physics processes at unprecedented energies, these are eclipsed by the energies attained in the Very Early Universe and in the ultra-high-energy cosmic rays that may be produced by Active Galactic Nuclei (AGNs), gamma-ray bursters (GRBs), supernovae, black holes and pulsars. The cosmic microwave background (CMB) and violent astrophysical events therefore provide unique laboratories for studying new fundamental physics. However, while searching for observational signatures of new physics, one must model known physics accurately, taking into account the information provided by the LHC and other accelerators. For example, the wealth of new data on the CMB and large-scale structure (LSS) necessitates the development of new analysis tools to probe and interpret possible signatures of new physics such as primordial non-Gaussianities and small neutrino masses, so as to distinguish them from more conventional phenomena. Likewise, searches for dark matter require accurate modelling of dark matter halos in order to calculate reliably density and velocity distributions as well as to probe for deviations from the usual weakly-interacting dark matter paradigm, such as self-interactions. Moreover, high-energy emissions from astrophysical sources provide unique opportunities to search for new physics that complement particle colliders and could yield striking observational signatures.

粒子物理学和宇宙学正在融合。近年来，由于大量新的原始天体物理学数据的可用性以及粒子物理学和宇宙学之间密切的理论联系的认识增加，这些领域之间的思想交叉授粉加速了。现在大型强子对撞机已经上线，粒子物理学正在以高质量的宇宙学数据作为回报。随着普朗克卫星和许多气球实验的数据即将发布，先进的LIGO引力波探测器，AMS-02天基粒子探测器，暗能量调查（DES）和许多其他寻找暗物质的实验，这种思想和数据的交叉授粉注定要继续下去。理论粒子物理学和宇宙学（TPPC）在这里提出的科学计划伦敦大学国王学院物理系的一个研究小组专注于利用基础物理学的见解分析和解释观测宇宙学和高能天体物理学的数据。尽管LHC现在可以在实验室中以前所未有的能量直接研究基础物理过程，这些能量被极早期宇宙中获得的能量和活动星系核（AGN）、伽马射线爆发（GRB）、超新星、黑洞和超新星产生的超高能宇宙射线所掩盖。因此，宇宙微波背景辐射（CMB）和剧烈的天体物理事件为研究新的基础物理提供了独特的实验室。然而，在寻找新物理学的观测特征时，人们必须准确地模拟已知的物理学，考虑到LHC和其他加速器提供的信息。例如，关于宇宙微波背景和大尺度结构（LSS）的大量新数据需要开发新的分析工具来探测和解释新物理学的可能特征，如原始非高斯性和小中微子质量，以便将它们与更传统的现象区分开来。同样，寻找暗物质需要精确的暗物质晕模型，以便可靠地计算密度和速度分布，并探测与通常的弱相互作用暗物质范式的偏差，例如自相互作用。此外，来自天体物理源的高能辐射为寻找补充粒子对撞机的新物理提供了独特的机会，并可能产生引人注目的观测信号。

项目成果

Robustness of Inflation to Large Tensor Perturbations

暴胀对大张量扰动的鲁棒性

• 发表时间: 2018
• 期刊: Journal of Cosmology and Astroparticle Physics
• 影响因子: 6.4
• 作者: Clough K

Robustness of inflation to inhomogeneous initial conditions

• DOI: 10.1088/1475-7516/2017/09/025
• 发表时间: 2016-08
• 期刊: Journal of Cosmology and Astroparticle Physics
• 影响因子: 6.4
• 作者: K. Clough;Eugene A. Lim;Brandon S. DiNunno;W. Fischler;R. Flauger;S. Paban

Phenomenology of theories of gravity without Lorentz invariance: The preferred frame case

• DOI: 10.1142/s0218271814430093
• 发表时间: 2014-11-01
• 期刊: INTERNATIONAL JOURNAL OF MODERN PHYSICS D
• 影响因子: 2.2
• 作者: Blas, Diego;Lim, Eugene
• 通讯作者: Lim, Eugene

Critical Phenomena in Non-spherically Symmetric Scalar Bubble Collapse

非球对称标量气泡破裂的关键现象

• 作者: Clough Katy