# AdS Carroll Chern-Simons supergravity in 2+1 dimensions and its flat limit

## TL;DR

This paper constructs a three-dimensional Chern-Simons supergravity theory invariant under AdS Carroll superalgebra and explores its flat limit to the super-Carroll algebra, highlighting the contraction process and resulting symmetries.

## Contribution

It introduces a new supergravity model based on the AdS Carroll superalgebra and analyzes its flat limit to the super-Carroll algebra, expanding the understanding of ultra-relativistic symmetries.

## Key findings

- Constructed AdS Carroll supergravity in 3D as a Chern-Simons theory.
- Derived the flat limit leading to super-Carroll supergravity.
- Analyzed the contraction at algebra, action, and field levels.

## Abstract

Carroll symmetries arise when the velocity of light is sent to zero (ultra-relativistic limit). In this paper, we present the construction of the three-dimensional Chern-Simons supergravity theory invariant under the so-called AdS Carroll superalgebra, which was obtained in the literature as a contraction of the AdS superalgebra. The action is characterized by two coupling constants. Subsequently, we study its flat limit, obtaining the three-dimensional Chern-Simons supergravity theory invariant under the super-Carroll algebra, which is a contraction of the Poincar\'e superalgebra. We apply the flat limit at the level of the superalgebra, Chern-Simons action, supersymmetry transformation laws, and field equations.