Theoretical Particle Physics at City University London

伦敦城市大学理论粒子物理学

基本信息

批准号：
ST/P000797/1
负责人：
Bogdan Stefanski
金额：
$ 5.75万
依托单位：
City, University of London
依托单位国家：
英国
项目类别：
Research Grant
财政年份：
2017
资助国家：
英国
起止时间：
2017 至无数据
项目状态：
已结题

来源：
https://gtr.ukri.org/projects?ref=ST%2FP000797%2F1
关键词：
Theoretical Particle Physics City University

项目摘要

With the arrival of the latest set of LHC on the Particle Physics arena, theoretical particle physics finds itself at a critical juncture. Having found the last missing element of the Standard Model, the Higgs boson, the LHC experiments are focussed on finding new physics that go beyond the Standard Model. At the same time, in the theoretical physics community there are a number of outstanding problems that will benefit from the information that we expect to arrive from the LHC. This project will investigate two key problems in modern theoretical physics. Firstly, we will investigate strongly coupled gauge theories using the so-called gauge/string correspondence. Much remains to be learnt about strongly coupled gauge theories. In recent years, there have been significant breakthroughs in understanding certain gauge theories using the gauge/string correspondence. In particular, the mathematical tools known as integrability have provided an incredibly precise analytic handle on certain supersymmetric strongly interacting gauge theories. These tools have been extended, in part by our group, to certain settings with relatively little supersymmetry. Low-supersymmetry gauge theories have also been shown, through the so-called dimer models to have intimate links to the mathematics of algebraic geometry and algebraic number theory. In this project we will significantly build on these results to exploit these new mathematical tools and methods to understand the strong-coupling dynamics of less supersymmetric gauge theories and their gauge/string dualities.Secondly, we will explore beyond-the-Standard-Model physics that can be obtained as a consistent low-energy theory from string theory. String theory has provided a framework for unifying gauge and gravity interactions into a single consistent quantum theory. One of the key challenges has been to identify particular examples of string theory compactifications which will lead to realistic low-energy physics. Our group will systematically search through the very large number of consistent string vacua, for those models which are consistent with the Standard Model and any new physics found by the LHC. Our past experience suggests that stringy geometries which could give the Standard Model are very rare. This in turn hints at the uniqueness, rather than the huge degeneracy, of string vacua, and we aim to extensively test this hypothesis.

随着最新一组LHC在粒子物理领域的到来，理论粒子物理学处于关键关头。 LHC实验发现了标准模型Higgs Boson的最后一个缺失元素，重点是寻找超出标准模型的新物理学。同时，在理论物理社区中，有许多杰出的问题将受益于我们期望从LHC到达的信息。该项目将研究现代理论物理学中的两个关键问题。首先，我们将使用所谓的量规/字符串对应关系进行强烈耦合的仪表理论。关于强烈耦合的量规理论还有很多尚待了解。近年来，使用量规/字符串对应关系理解某些规格理论的突破。特别是，被称为集成性的数学工具为某些超对称性强相互作用的仪表理论提供了令人难以置信的精确分析方法。这些工具部分由我们小组扩展到相对较小的超对称性的某些设置。还通过所谓的二聚体模型展示了低苏格对称量表的理论，以与代数几何学和代数数理论的数学建立密切的联系。在这个项目中，我们将大力基于这些结果，以利用这些新的数学工具和方法，以了解较不超对称规格理论及其规格/弦乐二元性的强耦合动力。字符串理论提供了一个将仪表和重力相互作用统一为单个一致的量子理论的框架。主要挑战之一是确定弦理论压缩的特定例子，这将导致现实的低能物理学。对于那些与标准模型和LHC发现的任何新物理学一致的模型，我们的小组将系统地搜索大量一致的字符串真空吸尘器。我们过去的经验表明，可以给标准模型的弦乐几何形状非常罕见。反过来，这暗示了弦真空的独特性，而不是巨大的堕落性，我们旨在广泛检验这一假设。