Intrinsic Scalar-Tensor Decoupling as a Mechanism for the Dual Behaviour of Cluster Subhalos
Year: 2026
Type: preprint
Abstract: This short theoretical note proposes a scalar-tensor interpretation of the radial duality reported by Natarajan, Chiang & Dutra (2026) in massive lensing-cluster subhalos: collisionless-CDM-like outer truncation radii, but enhanced inner lensing efficiencies usually modeled as requiring very steep effective inner slopes. Within Entangled Relativity, deviations from GR are governed by the local matter-geometry imbalance L_m - T. The note argues that high-dispersion subhalo cores can activate a scalar relay, while pressureless outskirts remain effectively GR/CDM-like. A Jeans/NFW estimate in a MACS J0416-like environment shows that the density-weighted relay source is concentrated in the inner few kiloparsecs, near the scale of the reported GGSL anomaly. The manuscript identifies three falsifiable predictions distinguishing this mechanism from velocity-dependent self-interacting dark matter.
Author: Lane-larquey, Olivier
Language: English
Subfield: Astronomy and Astrophysics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W7161379406
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