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| Evanenesnce, Curvature^2, and the Anomaly in N=4 Supergravity |
| 2017-07-05
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| Institute of Theoretical Physics | | Chinese Academy of Sciences | | Key Laboratory of Theoretical Physics | | Seminar | | Title 题目 | Evanenesnce, Curvature^2, and the Anomaly in N=4 Supergravity | | Speaker 报告人 | David Kosower David Kosower教授是量子色动力学精确计算和散射振幅研究领域的领军人物之一。他于1986年在哈佛大学取得博士学位，之后分别在哥伦比亚大学，费米国家实验室，欧洲核子物理研究中心从事博士后研究。自1993年起他任法国Saclay物理研究所教授至今。他是欧洲研究理事会高等研究基金的最早获得者之一。因为在振幅计算领域的突出贡献，他于2014年荣获美国物理学会颁发的代表国际高能物理界顶尖水平的Sakurai奖。在这个板书报告中，他将简要回顾近几年对引力圈图振幅和紫外发散研究的新发展，同时也将介绍他关于引力发散反常的最新研究成果。 | | Affiliation 所在单位 | IPhT-CEA Saclay | | Date 日期 | 3:30pm, July 5th, Wednesday | | Venue 地点 | Conference Hall 322, ITP | | Abstract 摘要 | Thanks to unitarity-based techniques, and the Bern-Carrasco-Johansson representation, new explicit calculations of ultraviolet divergences in gravity theories have become possible in recent years. Although lore suggests that supergravity theories should be ultraviolet divergent, only one explicit divergences has actually been found, at four loops in N=4 supergravity. I describe a first step in understanding possible connections between evanescent operators, the anomaly, and the ultraviolet divergence. | | Contact person 所内联系人 | Gang Yang |
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