Carrollian limit of quadratic gravity

Abstract

We study the Carrollian limit of the (general) quadratic gravity in four dimensions. We find that in order for the Carrollian theory to be a modification of the Carrollian limit of general relativity, the parameters in the action must depend on the speed of light in a specific way. By focusing on the leading and the next-to-leading orders in the Carrollian expansion, we show that there are four such non equivalent Carrollian theories. Imposing conditions to remove tachyons (from the linearized theory), we end up with a classification of Carrollian theories according to the leading-order and next-to-leading-order actions. All modify the Carrollian limit of general relativity with quartic terms of the extrinsic curvature. To the leading order, we show that two theories are equivalent to general relativity, one to $R+R^2$ theory, and one to the general quadratic gravity. To the next-to-leading order, two are equivalent to $R+R^2$ while the other two to the general quadratic gravity. We study the two theories that are equivalent to $R+R^2$ to the leading order and write their magnetic limit actions.

Typos corrected

References in corpus (18)

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Cited by in corpus (6)

• Quantization of Carrollian conformal scalar theories
• Uniqueness of Galilean and Carrollian limits of gravitational theories and application to higher derivative gravity
• Sengupta Transformations and Carrollian Relativistic Theory
• MultiCarroll dynamics
• Carroll black holes in (A)dS and their higher-derivative modifications
• Fate of $\kappa$-Minkowski space-time in non-relativistic (Galilean) and ultra-relativistic (Carrollian) regimes