What would it take for dark matter to be literally warm?

arXiv:2608.24990 · astro-ph.CO, hep-ph · Submitted 2026-08-25 · Read on arXiv

astro-ph.CO, hep-ph

Submitted: 2026-08-25

Updated: 2026-08-25

Terminology

• Benchmark — 17× in this paper · explained in 2 episodes
• Decoupling — 16× in this paper · explained in 2 episodes
• Reheating — 16× in this paper · explained in 2 episodes
• Abundance — 11× in this paper · explained in 1 episode
• Matter Power Spectrum — 4× in this paper · explained in 2 episodes
• Core — 2× in this paper · explained in 2 episodes
• Standard Model — 2× in this paper
• Warm Dark Matter (WDM) — 2× in this paper · explained in 3 episodes
• Baryonic Feedback — 1× in this paper · explained in 3 episodes
• Forward modeling — 1× in this paper · explained in 2 episodes
• Gauge Dependence — 1× in this paper · explained in 2 episodes
• Gravitational Lensing — 1× in this paper · explained in 2 episodes
• Microlensing — 1× in this paper · explained in 2 episodes
• Simulation-Based Inference (SBI) — 1× in this paper · explained in 3 episodes
• Simulation-based Inference — 1× in this paper · explained in 2 episodes

Sources

• Snowmass2021 Cosmic Frontier White Paper: Dark Matter Physics from Halo Measurements
• A Unified Halo Mass Function Across Dark Matter Models from High-Resolution Multi-Scale Simulations
• Machine Learning Does It and Does It Better: Unearthing Primordial Dark-Matter Velocities from the Matter Power Spectrum
• JWST lensed quasar dark matter survey IV: Stringent warm dark matter constraints from the joint reconstruction of extended lensed arcs and quasar flux ratios
• The free-streaming length of dark matter from JWST observations of 28 strong gravitational lenses
• Dark Matter Constraints from Small-Scale Cosmic Structure
• Strongest constraints on dark acoustic oscillations from the Lyman-alpha forest

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