Condensed EXO Matter in Bimetric Gravity and Macroscopic Warped-Bulk Extensions

Abstract

This record presents a theory-constrained speculative hard-SF worldbuilding framework developed as the scientific foundation for the novel project Internal Singularity. It combines a constitutive condensed EXO/X-matter response in ghost-free Hassan–Rosen bimetric gravity with macroscopic warped-bulk and chronology-capable extensions. The condensed X phase is assumed to retain positive rest and inertial energy while carrying an effective sign-reversed gravitational response. The exact unit-strength response is treated as a constitutive / beyond-current-EFT input rather than as an established microscopic law. The work explicitly separates published theoretical anchors, derived consequences, tested completion failures, speculative extensions, and open problems. The record includes the final v1.0.5 manuscript, the canonical upstream reproducibility archives, and the A2C/A2D/A2E/A2F calculation packages supporting the cosmology, migration, microscopic-completion, and propagation tests. Superseded development archives are excluded from the public evidence base. Fiction project context: This work was developed to support the scientific worldbuilding of the hard-science-fiction novel project Internal Singularity. Project website: https://gikarium.space