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Author

Ying-Jie Peng

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Review Aug 2026

ELUCID-DESI II. Revealing dark matter mass, tidal, and velocity (MTV) fields using galaxy group phase information

We introduce a novel method for reconstructing the cosmic mass, tidal, and velocity (MTV) fields over the redshift range $0<z<0.6$ using the phase information of galaxy groups. This approach replaces the explicit theoretical bias correction typically needed to relate galaxy groups to the underlying dark matter density...

Qing-Yang Li, Xiao-Hu Yang, Wen-Sheng Hong et al. · 0 citations
#diffusion models Review Open access Sep 2026

Reconstructing the Projected Dark Matter Field across 0.1–100 Mpc Scales from the SDSS Survey

Dark matter sets the gravitational environment in which galaxies form and evolve, but cannot be observed directly. We present a conditional diffusion model that reconstructs the projected dark matter density field from the galaxy stellar-mass density field for direct application to galaxy surveys. The model is trained...

Kun Zhao, Ying-Jie Peng, Ding-Yi Zhao et al. · 0 citations

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