Events List

DateEvent TypeSpeaker
03/03/2025CCPP Brown BagRoman Scoccimarro [ + ]
03/04/2025Astro SeminarJJ Zanazzi [ + ]
03/05/2025HEP SeminarGiorgio Gratta [ + ]
03/06/2025Astro SeminarJanosz Dewberry [ + ]
03/06/2025Physics Dept ColloquiumGiorgio Gratta [ + ]
03/07/2025Oral DefenseCara Giovanetti [ + ]
03/07/2025Hep-Th Discussion SessionCalkins [ + ]
03/10/2025CCPP Brown BagJesse Liu [ + ]
03/11/2025Astro SeminarRichard Anantua [ + ]
03/11/2025office hoursMathew Calkins [ + ]
03/12/2025HEP Journal Club [ + ]
03/12/2025HEP SeminarJunwu Huang [ + ]
03/12/2025office hoursMathew Calkins [ + ]
03/13/2025Physics Dept ColloquiumJacob Barandes [ + ]
03/14/2025Hep-Th Discussion SessionCalkins [ + ]
03/17/2025CCPP Brown BagAnthony Pullen [ + ]
03/18/2025Informal HEP TalkTony Zhou (host) [ + ]
03/18/2025Astro SeminarCarol Cuesta Lazaro [ + ]
03/19/2025HEP Journal Club [ + ]
03/19/2025HEP SeminarDaniel Harlow [ + ]
03/21/2025Informal HEP TalkTianli Wang [ -- ]

Title: A CFT Dual for Celestial MHV Amplitudes
Abstract: I will talk about a 2d CFT dual we constructed for 4d gluon MHV amplitudes in flat space, based on the papers 2403.18896 and 2312.07820. I will start with reviewing relevant basics of celestial holography, in particular, the challenges of understanding the role of translation invariance in the CFT dual. Then I will discuss the central object in my talk, leaf amplitudes, which are smooth functions that bridge usual (singular) flat space amplitudes and our simple CFT dual. I will then introduce the CFT dual, whose correlators reproduce gluon MHV amplitudes. It comprises two sectors, one with free fermions that give a current algebra, the other being Liouville theory. The key step is to show correlators of light operators in the semiclassical limit of Liouville theory are scalar contact Witten diagrams. (1:00 PM - 2:00 PM, 726 Broadway, 940, CCPP Seminar)
03/21/2025Hep-Th Discussion SessionCalkins [ + ]
03/24/2025Holiday [ + ]
03/24/2025OtherRhine Samajdar [ + ]
03/25/2025Holiday [ + ]
03/26/2025Holiday [ + ]
03/27/2025Holiday [ + ]
03/28/2025Holiday [ + ]
03/28/2025Hep-Th Discussion SessionCalkins [ + ]
03/31/2025Informal HEP TalkAurelio Amerio [ + ]