Theoretical analysis evaluates conformal embeddings in cosmological general relativity, clarifying mass-growth ambiguity in cosmologically coupled black holes.
We revisit the conformal embedding of static Kerr-Newman-de Sitter(KNdS) spacetime into Cosmological General Relativity(CGR), and subject its central claims to independent symbolic verification and to comparison with the pre-existing "cosmologically coupled black hole"(CCBH) literature, which an earlier version of this analysis omitted.
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Sangwha Yi (2026) studied this question.
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