Carrollian Physics and Holography

Carrollian physics and holography

Carrollian physics appeared for the first time out of a mathematical curiosity in a work of Lévy-Leblond: what if, instead of taking the usual non-relativistic limit of the Poincaré group where the speed of light c is taken to ∞, one considers the opposite limit, namely c→0? While the first limit gives rise to the familiar Galilean group, the second leads to the so-called Carroll group. In a Carrollian limit (c→0), the lightcones collapse along the time axis, which means that particles can no longer move and two spacetime events are causally disconnected. This absence of causality, as well as arbitrarinesses of time intervals, reminded Lévy-Leblond of Lewis Carroll's book Through the looking-glass, which is the origin for the name of this ultralocal limit of the Poincaré group.

While such spacetimes seem a priori to be too strange to be of any physical relevance, there has been recently a surge of interest in Carrollian physics. It is quite a remarkable fact that, indeed, Carrollian physics naturally appear in the context of the geometry of null surfaces and the associated Bondi-Metzner-Sachs symmetries, but also black hole horizons, inflationary cosmology, fluid/gravity and holographic correspondences, as well as limits of Einstein gravity.

The ESI programme is expected to foster further progress on the following developments:

  • Carrollian fluids
  • Flat space holography
  • Carrollian gravity theories
  • Lower-dimensional models

While there are interesting interplays between all aspects, we aim to concentrate activities as follows:

  • Weeks 1+2: flat space holography (Celestial & Carrollian)
  • Weeks 3+4: Carrollian applications (cond-mat, fractons, etc.)

A rough schedule of the program is as follows:

  • 2-8 April: Review Talks / Discussions
  • 9-16 April: Workshop
  • 17-26 April: Seminar talks / Discussions

Coming soon.

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Name Affiliation
Andrea Campoleoni University of Mons
Pedro del Real Lavergne University of Vienna
Laura Donnay SISSA
Adrien Fiorucci Technical University of Vienna
Stefan Fredenhagen University of Vienna
Daniel Grumiller Technical University of Vienna
Stefan Prohazka University of Vienna


Name Affiliation
Ankit Aggarwal Technical University of Vienna
Jay Armas University of Amsterdam
Glenn Barnich Free University of Brussels
Eric Bergshoeff University of Groningen
Bin Chen Peking University
Luca Ciambelli Free University of Brussels
Claudio Dappiaggi University of Pavia
José Figueroa-O'Farrill University of Edinburgh
Marc Henneaux Collège de France
Yannick Herfray University of Tours
Rob Leigh University of Illinois at Urbana-Champaign
Sucheta Majumdar Ecole Normale Superieure de Lyon
Luciano Montecchio Technical University of Vienna
Gerben Oling University of Edinburgh
Simon Pekar Ecole Polytechnique
Alfredo Perez Centro de Estudios Cientificos
Anastasios Petkou Aristotle University
Daniele Pranzetti University of Udine
Romain Ruzziconi University of Oxford
Stephan Stieberger Max Planck Institute for Physics
Juan A. Valiente Kroon Queen Mary University of London
At a glance
Thematic Programme
April 1, 2024 — April 26, 2024
ESI Boltzmann Lecture Hall
Andrea Campoleoni (U Mons)
Pedro del Real Lavergne (U of Vienna)
Laura Donnay (SISSA, Trieste)
Adrien Fiorucci (TU Vienna)
Stefan Fredenhagen (U of Vienna)
Daniel Grumiller (TU Vienna)
Stefan Prohazka (U of Vienna)