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Theoretical Particle Physics

理论粒子物理

基本信息

批准号：
1719877
负责人：
Csaba Csaki
金额：
$ 180万
依托单位：
Cornell University
依托单位国家：
美国
项目类别：
Continuing Grant
财政年份：
2017
资助国家：
美国
起止时间：
2017-08-15 至 2021-07-31
项目状态：
已结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=1719877&HistoricalAwards=false
关键词：
Theoretical Particle Physics

项目摘要

This proposal funds the research activities of Professors Csaba Csaki, Yuval Grossman, Peter Lepage, Liam McAllister, and Maxim Perelstein at Cornell University.High-energy physics studies the most fundamental building blocks of matter and their interactions. There are several different ways in which to try to answer the biggest puzzles this field is currently facing. By colliding elementary particles at the highest energies to date, the Large Hadron Collider (LHC) is expected to yield new clues on the interactions of elementary particles at the shortest distances. By extremely precise measurements of the cosmic microwave background (CMB) radiation, the properties of the Universe and the type of matter and energy dominating it at early times can be studied. Finally, powerful computer simulations can be used to study the properties of the strong interactions. Pursuing all of these directions, the Cornell Particle Theory group will advance the national interest by promoting the advancement of science in one of its most fundamental directions: the discovery and understanding of new physical law. In his research, Prof. Csaki will develop new models that can explain the origin of mass ("composite Higgs models") and can be tested at the LHC. The research of Prof. Grossman will focus on the heavier versions of the fundamental particles making up matter (the charm and the bottom quarks) as well as on neutrinos, particles that are created in beta decays. Prof. Perelstein will investigate new methods by which new particles could be discovered at the LHC, as well as new models for the type of matter (the so-called "dark matter") that surrounds ordinary visible matter, but interacts very weakly with it. Prof. McAllister will try to characterize the physical laws of the very early Universe by using results from string theory, which is the best candidate for understanding the behavior of the gravitational force at high energies. Finally, Prof. Lepage will use powerful computer simulations and state-of-the-art techniques to obtain precision results for strongly-interacting matter. This project will also have significant broader impacts. The Cornell particle theory group will train graduate students and involve postdocs in their research, and thereby provide critical training for junior physicists beginning research in this field. They will also give public lectures on their research results, as well as regular lectures to local high-school students. More technically, Prof. Csaki will investigate new approaches to the hierarchy problem, will examine novel types of Higgs sectors and composite Higgs models, and will study possible experimental tests of vacuum energy, as well as the effects of monopoles in supersymmetric theories. Prof. Grossman will explore the physics of the intensity frontier, including charm and beauty physics, CP violation, and neutrino physics. Prof. Perelstein will investigate physics questions that can be addressed with the precision Higgs program at the LHC and future colliders, such as the nature of the electroweak phase transition. He will also continue to provide theoretical interpretation of the LHC data, and explore novel models of dark matter. Prof. Lepage, as a co-founder of the HPQCD lattice QCD collaboration, will continue to develop and deploy new techniques for extracting important physics from nonperturbative QCD, with a strong focus on QCD backgrounds that must be analyzed to isolate new physics in heavy-quark physics and very high-precision quantities such as the magnetic moment of the muon. Prof. McAllister will investigate string theory and early-universe cosmology. He will characterize quantum-gravity constraints on inflation, explore new axion inflation scenarios in string theory, develop tools to compute effective theories in compactifications on Calabi-Yau hypersurfaces, and study the vacuum structure of string theory via random matrix theory.

这项提案资助了康奈尔大学的Csaba Csaki、Yuval Grossman、Peter Lepage、Liam麦卡利斯特和Maxim Perelstein教授的研究活动。高能物理学研究物质的最基本组成部分及其相互作用。有几种不同的方法可以尝试回答这个领域目前面临的最大难题。大型强子对撞机（LHC）通过碰撞迄今为止最高能量的基本粒子，有望在最短距离上产生基本粒子相互作用的新线索。通过对宇宙微波背景辐射（CMB）的极其精确的测量，可以研究宇宙的性质以及早期支配它的物质和能量的类型。最后，强大的计算机模拟可以用来研究强相互作用的性质。追求所有这些方向，康奈尔大学粒子理论小组将通过促进科学在其最基本的方向之一的进步来促进国家利益：发现和理解新的物理定律。在他的研究中，Csaki教授将开发可以解释质量起源的新模型（“复合希格斯模型”），并可以在LHC上进行测试。格罗斯曼教授的研究将集中在构成物质的基本粒子（魅力和底夸克）的较重版本以及中微子，即在β衰变中产生的粒子。 Perelstein教授将研究在LHC中发现新粒子的新方法，以及物质类型的新模型（所谓的“暗物质”），围绕着普通的可见物质，但与它的相互作用非常弱。麦卡利斯特教授将试图通过使用弦理论的结果来描述早期宇宙的物理定律，它是理解高能引力行为的最佳候选者。最后，Lepage教授将使用强大的计算机模拟和最先进的技术来获得强相互作用物质的精确结果。该项目还将产生广泛的影响。康奈尔大学粒子理论小组将培训研究生，并让博士后参与他们的研究，从而为开始这一领域研究的初级物理学家提供关键培训。他们还将就他们的研究成果进行公开讲座，并定期为当地高中学生讲课。 Csaki将研究解决层次问题的新方法，将研究新型希格斯扇区和复合希格斯模型，并将研究真空能量的可能实验测试，以及超对称理论中单极子的影响。格罗斯曼将探索强度前沿的物理学，包括魅力和美丽物理学，CP违反和中微子物理学。 Perelstein将研究可以在LHC和未来对撞机上使用精确希格斯程序解决的物理问题，例如电弱相变的性质。他还将继续提供LHC数据的理论解释，并探索暗物质的新模型。 Lepage教授作为HPQCD晶格QCD合作的联合创始人，将继续开发和部署从非微扰QCD中提取重要物理的新技术，重点关注必须分析的QCD背景，以隔离重夸克物理学中的新物理和非常高精度的量，如μ子的磁矩。麦卡利斯特将研究弦理论和早期宇宙宇宙学。他将描述量子引力对通货膨胀的约束，探索弦理论中新的轴子通货膨胀场景，开发工具来计算卡-丘超曲面上紧化的有效理论，并通过随机矩阵理论研究弦理论的真空结构。

项目成果

期刊论文数量（38）

专著数量（0）

科研奖励数量（0）

会议论文数量（0）

专利数量（0）

Neutral B -meson mixing from full lattice QCD at the physical point

DOI：
10.1103/physrevd.100.094508
发表时间：
2019-07
期刊：
Physical Review D
影响因子：
5
作者：
R. Dowdall;C. Davies;R. Horgan;G. Lepage;C. Monahan;J. Shigemitsu;M. Wingate
通讯作者：
R. Dowdall;C. Davies;R. Horgan;G. Lepage;C. Monahan;J. Shigemitsu;M. Wingate

The Swampland Distance Conjecture for Kähler moduli

克勒模数的沼泽距离猜想