Opening Pandora's box: Kundt solutions to Conformal Killing Gravity

2024/09/22 by Sigbjorn Hervik, Hervik, Sigbjorn, Edmar G. Pantohan +1 · 2 citations
Physics and Astronomy · #Cosmology and Gravitation Theories #FOS: Physical sciences #General Relativity and Quantum Cosmology (gr-qc) #Mathematical Physics (math-ph) #Relativity and Gravitational Theory

paper · pdf · doi:10.48550/arxiv.2409.14353

openalex publication_date 2024/09/22 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

We consider Kundt solutions to vacuum Conformal Killing Gravity (CKG) proposed by Harada and find numerous solutions in four dimensions and in higher dimensions. In CKG theory the cosmological constant appears as an integration constant, and hence, is naturally embedded in the theory. However, by considering Kundt solutions to CKG we seemingly open Pandora's box: We find so many solutions so a selection criterium is needed in CKG to explain the current accelerated expansion of the universe.

Cited by

• Black holes and wormholes in sourceless three-dimensional conformal Killing gravity
• Constraints on cosmological parameters and CMB first acoustic peak in conformal Killing gravity

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