Lattice simulations of Composite Higgs models/ Lattice Field Theory

该项目将研究超越标准模型的理论，称为复合希格斯模型。在这些理论中，希格斯玻色子不是一个基本粒子，而是一个复合粒子，这一特征使模型能够回避自然性问题。在大型强子对撞机（LHC）等现代加速器设施中，复合场景在寻求新物理学的过程中受到了相当大的关注。在自然界中，只有非微扰现象才能解释像普通质子这样的束缚态，其质量主要来自其组成部分夸克的结合能。在复合希格斯玻色子理论中，人们正在努力设计标准模型的扩展，以解释作为束缚态的希格斯玻色子的质量和性质。在这个项目中使用的格点方法是一个非常成功的第一原理方法，它允许在非微扰状态下解决规范理论。计算采用大规模模拟，通常在最大的超级计算机上运行。晶格模拟是一种独特的工具，可以探索理论中无法解析解决的非微扰现象。在这个项目中，我们将使用晶格模拟来探索新的非微扰动力学，并提供与现代实验相关的定量结果。我们的研究结果将为在LHC进行的新物理研究提供信息，并测试这类新模型的可行性。候选人将参与项目的所有方面，从模拟到数据分析，以及量子场论分析工具的开发。

The project will investigate Beyond the Standard Model theories called Composite Higgs models. In these theories, the Higgs boson is not a fundamental particle but a composite one, a feature that allows the model to evade the naturalness problem. The composite scenarios have received considerable attention in the quest for new physics at modern accelerator facilities like the Large Hadron Collider (LHC).In Nature, only non-perturbative phenomena can explain bound states like the ordinary proton, which mass mostly comes from the binding energy of its constituents: the quarks. In Composite Higgs theories, tremendous efforts are being made to design extensions of the Standard Model that explain the mass and properties of the Higgs boson as a bound state.The lattice approach, used in this project, is a very successful first principle method that allows to solve Gauge Theories in the non-perturbative regime. Calculations resort to large scale simulations and are typically run on the largest supercomputers. Lattice simulations are a unique tool to explore non perturbative phenomena in theories which cannot be analytically solved.In this project we will use lattice simulations to explore new non perturbative dynamics and provide quantitative results that are relevant for modern experiments. Our results will inform searches for new physics performed at the LHC and test the viability of this new class of models.The candidate will be involved in all the aspects of the project, ranging from simulations, to data analysis, together with development of analytical tools in quantum field theories.