Events List

DateEvent TypeSpeaker
06/04/2026Informal HEP TalkRaquel Izquierdo Garcia [ + ]
06/05/2026Informal HEP TalkEric Bergshoeff [ -- ]

Title: A Unifying Approach to Galilei and Carroll Symmetries
Abstract: We show that two basic properties of Galilei symmetries can be extended, against common belief, to Carroll symmetries when properly interpreted. The first property is the fact that one can take critical Galilei limits using the fact that the Galilei algebra can be centrally extended to a Bargmann algebra. We demonstrate that, although the Carroll algebra does not allow such a central extension, one can nevertheless formulate a critical Carroll limit provided one allows for Euclidean or spacelike branes. The second property of Galilei symmetries is the fact that one can obtain systems with Bargmann symmetry by performing a null reduction over a spatial dimension. We show that similarly critical Carroll systems can be obtained by performing a Carrollian version of the null reduction over a time direction. In the supersymmetric case the resulting theories can be identified with critical Carroll limits of the star supergravities introduced by Hull. (2:00 PM - 3:00 PM, 726 Broadway, 940, CCPP Seminar)
06/17/2026Oral DefenseJessica Salcido [ + ]
06/25/2026Informal HEP TalkTheo Keseman [ + ]
11/11/2026HEP SeminarAlexander Penin [ + ]