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.

该奖项为纽约大学的G. Gabadadze，M。Porrati和A. Sirlin教授的研究活动提供了资金。 该研究小组的成员致力于解决基本粒子物理，宇宙学和重力中的基本问题。 这些教职员工的研究兴趣是彼此补充的。要发现新物理学，必须掌握描述所有已知基本相互作用（包括重力）的理论，即所谓的标准模型。 这是Sirlin教授的研究的目的。 量子重力和超级重力是Porrati教授研究的重点。 这些是整个宇宙研究中最相关的理论，即在非常远的距离或了解早期宇宙。 对量子重力的研究还与了解暗物质和暗能量的性质的尝试有关 - 物质和能量的神秘形式，这对于理解宇宙的发展方式至关重要。 这些问题由教授调查。 Porrati和Gabadadze。 因此，该领域的研究通过以最基本的方向之一促进科学进步来提高国家利益：对新物理定律的发现和理解。 该项目也预计会产生更大的影响。 所有高级研究人员都与研究生和博士后密切合作进行了研究，因此受过高级理论研究的培训。 研究结果的传播将通过审查文章以及在专业和受欢迎的科学期刊以及研讨会，基于视频和互联网的课程以及流行的讲座的组织中进行。纯ADS3重力以及圆环分区函数以及各种配方中的纯3D重力和超级重力的某些指标。他还计划在某些包含标量曲率的较高功能的通货膨胀模型中研究物质耦合的概括。在过去几年中，Porrati继续进行的工作将研究ADS和Minkowski背景中高旋转粒子在相互作用中的性质。 Porrati还计划使用最近发现的新的ADS3大量重力理论，研究2D形成野外理论的全息重新归一化流，其左和右中央电荷不同。 加巴达兹（Gabadadze）正在向几个不同的方向进行研究 - 关于宇宙学恒定问题和修饰的重力，对大量重力的AD/CFT对应，矮人的量子液体以及冷原子系统中的孤子 - 所有这些都使用了 - 有效的量子场理论作为统一主题的方法。 最后，鉴于MUCAP协作报告的2013年测量值越来越高，Sirlin计划更新和改善他的2007年分析。 特别是，他计划研究实验精度进一步改善的可能性可能会导致轴向矢量耦合$ g_ {a} $具有独立，准确的价值，这可能对中子β衰变具有重要意义。 Sirlin还计划研究质子对抗肿瘤捕获的辐射校正，该过程目前对于中微子振荡的反应堆研究很重要。