String Theory, Particle Physics and Model Building

弦理论、粒子物理和模型构建

• 批准号: 1518967
• 负责人: Sebastian Franco
• 金额: $ 15万
• 依托单位: CUNY City College
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2015
• 资助国家: 美国
• 起止时间: 2015-09-01 至 2018-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1518967&HistoricalAwards=false
• 关键词: String; Theory; Particle; Physics; Model

This award funds the research activities of Professor Sebastian Franco at the City College of the City University of New York.The two pillars of our current understanding of the universe, Quantum Mechanics and General Relativity, are mutually incompatible. String theory reconciles them, unifying all fundamental interactions in nature, including gravity, in a quantum theory. Fundamental physics is going through an era of exceptional developments, both at the experimental and theoretical fronts. Ongoing experiments are probing the basic structure of nature along a multitude of complementary directions, from the cosmological to the intensity frontiers. The Large Hadron Collider (LHC) has recently discovered the Higgs boson, the last missing piece of the Standard Model of particle physics, and is vigorously testing several of its possible extensions. As part of his proposed research, Professor Franco will undertake a comprehensive investigation of the connection between string-theory models and our world. He will also study several new possibilities for physics beyond the Standard Model, with an emphasis on models with ingredients that appear generically in string theory or with a radical departure from conventional scenarios. As such, the proposed research program will help preserve the United States' long-standing status at the cutting edge of string phenomenology. This proposal also has a significant broader-impact component. One of its salient elements is the creation of the "From the Collider to the Classroom" program, in which active physicists will present their research to high school teachers. The PI will actively engage undergraduate and graduate students as well as postdoctoral associates in his research, training them in research methods in theoretical physics. He also plans to introduce key improvements to the undergraduate research program at CCNY aimed at developing high-impact practices leading to deep approaches to learning. Finally, the PI will continue and strengthen his ongoing interdisciplinary collaborations bringing together the physics and mathematics communities.More technically, key objectives of this proposal are: a systematic derivation of precise features of the Standard Model, such as its flavor structure in local Type IIB string-theory constructions and comparison with experiments; the development and implementation of new algorithms for a large-scale computer search of these models; the study of favorable scenarios in which characteristic features of string theory can lead to recognizable imprints accessible to experiments; a thorough investigation of a wide range of new supersymmetry-breaking and mediation scenarios and their implications for the LHC, and the development of new tools for studying global aspects of string compactifications and their incidence in experimentally measureable quantities.

该奖项资助了纽约城市大学城市学院Sebastian Franco教授的研究活动。我们目前对宇宙理解的两大支柱——量子力学和广义相对论——是互不相容的。弦理论调和了它们，在量子理论中统一了自然界中所有基本的相互作用，包括引力。基础物理学正在经历一个非凡发展的时代，无论是在实验方面还是在理论方面。正在进行的实验沿着许多互补的方向探索自然的基本结构，从宇宙学到强度边界。大型强子对撞机（LHC）最近发现了希格斯玻色子，这是粒子物理学标准模型中最后一个缺失的部分，并且正在大力测试它的几个可能的扩展。作为他提议的研究的一部分，佛朗哥教授将对弦理论模型和我们的世界之间的联系进行全面的调查。他还将研究标准模型之外的几种新的物理学可能性，重点是具有弦理论中普遍存在的成分的模型，或者与传统情景完全不同的模型。因此，拟议的研究计划将有助于保持美国在弦现象学前沿的长期地位。这项建议还具有重要的更广泛的影响。其中一个突出的元素是创建了“从对撞机到课堂”项目，在这个项目中，活跃的物理学家将向高中教师展示他们的研究成果。他将积极吸引本科生、研究生和博士后参与他的研究，培养他们在理论物理方面的研究方法。他还计划对CCNY的本科生研究项目进行重大改进，旨在开发高影响力的实践，从而形成深入的学习方法。最后，PI将继续并加强他正在进行的跨学科合作，将物理和数学社区聚集在一起。从技术上讲，本提案的主要目标是：系统地推导出标准模型的精确特征，例如其在局部IIB型弦理论结构中的风味结构以及与实验的比较；这些模型的大规模计算机搜索的新算法的开发和实现；对有利情景的研究，在这些有利情景中，弦理论的特征可以导致可被实验识别的印记；深入研究了一系列新的超对称破缺和调解场景及其对大型强子对撞机的影响，并开发了用于研究弦紧化的全局方面及其在实验可测量量中的发生率的新工具。

项目成果

Bipartite field theories and D-brane instantons

• DOI: 10.1007/jhep11(2018)098
• 发表时间: 2018-04
• 期刊: Journal of High Energy Physics
• 影响因子: 5.4
• 作者: S. Franco;E. García-Valdecasas;Á. Uranga