Phantom Hypermassive Black Holes as Fermionic Dark Matter Reservoirs: A Unified Framework via Scalar Portal Mechanisms

Abstract

We present a unified theoretical framework combining Phantom Hypermassive Black Holes (PHBHs) with fermionic dark matter mediated by scalar portal interactions. PHBHs serve as cosmic reservoirs of fermionic dark matter in quantum superposition states across extra dimensions, with scalar mediators enabling both gravitational "ghosting" and controlled absorption signatures. This merger resolves the tension between cosmological relic abundance and experimental detectability identified in recent scalar portal research, while providing a comprehensive explanation for dark matter phenomenology from microscopic to cosmic scales. The framework predicts distinctive observational signatures including modulated absorption cross-sections, gravitational wave chirps with scalar field coupling, and characteristic void structures reflecting fermionic exclusion principles at galactic scales.