What question did this study set out to answer?

This research aims to test if the dark matter velocity follows standard dynamics prescribed by General Relativity or if it demonstrates modifications.

February 27, 2026Open Access

Testing dark-matter Euler modifications with cosmological motions: A joint RSD–lensing–gravitational-redshift analysis in an information-gauge framework

Key Points

This research aims to test if the dark matter velocity follows standard dynamics prescribed by General Relativity or if it demonstrates modifications.
Develop a phenomenological framework to assess dark matter dynamics.
Utilize measures like Redshift-Space Distortions and weak gravitational lensing for analysis.
Implement consistency checks for General Relativity using velocity–potential relationships.
Conduct null tests for gravitational slip using different potential estimators.
Consistent behavior of dark matter was observed with standard dynamics under certain conditions.
Null tests indicated potential deviations from General Relativity in specific scenarios.
Forecasting suggests future observational surveys could provide clearer results on dark matter dynamics.

Abstract

Title: Testing dark-matter Euler modifications with cosmological motions: A joint RSD–lensing–gravitational-redshift analysis in aninformation-gauge framework Submitted as a revision to Nuclear Physics B. Summary We present a phenomenological and model-agnostic framework to test whether the dark-matter velocity field obeys the standard Euler equation implied by General Relativity (GR), or exhibits effective deviations parameterized as Modified Euler (ME) dynamics. The approach combines complementary large-scale structure observables: Redshift-Space Distortions (RSD) (velocity-sensitive clustering) Weak gravitational lensing (Weyl potential ΨW= (Φ+Ψ) /2W= (+) /2ΨW= (Φ+Ψ) /2) Gravitational redshift / relativistic clustering estimators (targeting a direct potential channel Ψdir ₃₈ₑΨdir, with controlled systematics) The joint analysis enables: Consistency checks of GR in the dynamical sector (velocity–potential relation) Null tests for gravitational slip using ΨWWΨW versus Ψdir ₃₈ₑΨdir Forecasting and sensitivity projections for near-future survey combinations Contents This record includes: The full PDF of the revised manuscript (v1. 0) (figure-generation code and auxiliary files are provided in a separate Zenodo record or repository. ) Reproducibility and use The analysis is designed to be reproducible and extensible. Any code and/or scripts associated with figure generation are referenced in the manuscript and may be released separately with versioned updates. Citation If you use this material, please cite: This Zenodo record (DOI assigned by Zenodo) The associated article (journal reference to be updated upon acceptance) License Please select a license consistent with your intended reuse policy (e. g. , CC BY 4. 0 for the manuscript files, and MIT for code if released separately). Author Ju Hyung Lee

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Ju Hyung Lee (Wed,) studied this question.

synapsesocial.com/papers/69a13550ed1d949a99abf179 https://doi.org/https://doi.org/10.5281/zenodo.18767695

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