Particle and Quantum Field Theory Investigations

粒子和量子场论研究

• 批准号: 1620039
• 负责人: Massimo Porrati
• 金额: $ 75万
• 依托单位: New York University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2016
• 资助国家: 美国
• 起止时间: 2016-09-15 至 2020-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1620039&HistoricalAwards=false
• 关键词: Particle; Quantum; Field; Theory; Investigations

This award funds the research activities of Professors G. Gabadadze, M. Porrati, and A. Sirlin at New York University. Members of this research group work towards solving fundamental questions in elementary particle physics, cosmology, and gravitation. The research interests of these faculty members are complementary to one another. To discover new physics it is essential to master the theory that describes all known elementary interactions excluding gravity, namely the so-called Standard Model. This is the aim of Prof. Sirlin's research. Quantum gravity and supergravity are the focus of Prof. Porrati's research. These are the theories most relevant in the study of the universe as a whole, i.e. at very large distances, or for understanding the very early universe. The study of quantum gravity also connects with attempts to understand the nature of dark matter and dark energy --- mysterious forms of matter and energy which are critical for understanding the way in which the universe evolves. These problems are investigated by Profs. Porrati and Gabadadze. Thus, research in this area advances the national interest by promoting the progress of science in one of its most fundamental directions: the discovery and understanding of new physical laws. Broader impacts are also expected from the project. All senior investigators carry out their research in close collaboration with graduate students and postdocs, who are thus trained in advanced theoretical research. Dissemination of research results will occur through review articles to be published in specialized and popular-science journals as well as through the organization of workshops, video- and Internet-based courses, and popular lectures.More specifically, Porrati plans to study topology-changing transition amplitudes in pure AdS3 gravity as well as the torus partition function and certain indices for pure 3D gravity and supergravity in various formulations. He also plans to study a generalization of matter couplings in certain supergravity models of inflation containing higher powers of the scalar curvature. Properties of high-spin particles in interaction in AdS and Minkowski backgrounds will be studied by Porrati continuing work done in the last years. Porrati also plans to study holographic renormalization flows of 2D conformal field theories with different left and right central charges, using a recently discovered new theory of AdS3 massive gravity called "minimal massive gravity." Gabadadze is proposing research in several different directions --- on the cosmological constant problem and modified gravity, on the AdS/CFT correspondence for massive gravity, on quantum liquids in dwarf stars, and on solitons in cold atom systems --- all using the method of effective quantum field theory as a unifying theme. Finally, in view of the increased precision of a 2013 measurement reported by the MuCap Collaboration, Sirlin plans to update and improve his 2007 analysis. In particular, he plans to study the possibility that further improvement in the experimental precision may lead to an independent, accurate value for the axial-vector coupling $g_{A}$, a result that may have important implications for neutron beta decay. Sirlin also plans to study the radiative corrections to antineutrino capture by protons, a process that is currently important for reactor studies of neutrino oscillations.

该奖项资助G教授的研究活动。Gabadadze，M. Porrati和A. Sirlin在纽约大学。 该研究小组的成员致力于解决基本粒子物理学，宇宙学和引力的基本问题。 这些教师的研究兴趣是相辅相成的。为了发现新的物理学，必须掌握描述所有已知的基本相互作用的理论，即所谓的标准模型。 这就是Sirlin教授研究的目的。 量子引力和超引力是Porrati教授的研究重点。 这些理论与研究整个宇宙（即在非常大的距离上）或理解非常早期的宇宙最为相关。 量子引力的研究还与试图理解暗物质和暗能量的性质有关-暗物质和暗能量是物质和能量的神秘形式，对于理解宇宙演化的方式至关重要。 这些问题是由教授研究。波拉提和加巴达泽。 因此，这一领域的研究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。 预计该项目还将产生更广泛的影响。 所有高级研究人员都与研究生和博士后密切合作开展研究，他们因此接受了先进的理论研究培训。 将通过在专业和科普期刊上发表评论文章以及组织讲习班、视频和互联网课程和大众讲座来传播研究成果。波拉提计划学习拓扑学-在纯AdS 3引力中改变跃迁振幅，以及在各种不同情况下纯3D引力和超引力的环面配分函数和某些指数，制剂。他还计划研究物质耦合在某些超引力膨胀模型中的推广，这些模型包含更高的标量曲率幂。Porrati将继续研究AdS和Minkowski背景中相互作用的高自旋粒子的性质。Porrati还计划研究具有不同左右中心电荷的2D共形场论的全息重整化流，使用最近发现的称为“最小质量引力”的AdS 3大质量引力新理论。" Gabadadze提出了几个不同方向的研究-宇宙学常数问题和修正引力，大质量引力的AdS/CFT对应，矮星中的量子液体，冷原子系统中的孤子-所有这些都使用有效量子场论的方法作为统一的主题。 最后，鉴于MuCap协作组织报告的2013年测量结果的精确度提高，Sirlin计划更新和改进他2007年的分析。 特别是，他计划研究进一步提高实验精度的可能性，可能会导致轴向矢量耦合$g_{A}$的独立，准确的值，这一结果可能对中子β衰变具有重要意义。 Sirlin还计划研究质子捕获反中微子的辐射修正，这一过程目前对中微子振荡的反应堆研究很重要。