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Holographic Carrollian conformal field theories pseudoentropy

Reza Fareghbal* and Abolfazl Hassani Majoulan†

  • *Contact author: r_fareghbal@sbu.ac.ir, reza.fareghbal@gmail.com
  • †Contact author: abolfazl.hassani2016@gmail.com
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Phys. Rev. D 113, 046006 – Published 10 February, 2026

DOI: https://doi.org/10.1103/w6c8-hd9y

Abstract

According to the flat/CCFT correspondence, Carrollian conformal field theories (CCFT) in d dimensions are dual to asymptotically flat spacetimes in d+1 dimensions. In this paper, starting from the holographic interpretation of pseudoentropy in the (A)dS3/CFT2, we show that both extremal spacelike and timelike curves possess a well-defined flat-space limit. The length of these curves can be regarded as the real and imaginary parts of the pseudoentropy for the underlying field theory, where only the real part has been considered thus far. Our calculations can confirm that the entanglement entropy in the CCFTs is fundamentally pseudoentropy.

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Phys. Rev. D 113, 046006– Published 10 February, 2026
  • Received 13 November 2025
  • Accepted 13 January 2026
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