Validation of the Hybrid Bias Expansion model for the galaxy bispectrum

arXiv:2606.19452 · astro-ph.CO · Submitted 2026-08-22 · Read on arXiv

Marcos Pellejero Ibáñez, Raul E. Angulo, Laila Linke, Sara Ortega-Martinez, Maria Tsedrik, Sergio Contreras, John A. Peacock, Kate Storey-Fisher, Jens Stücker, Rodrigo Voivodic, Matteo Zennaro

astro-ph.CO

Submitted: 2026-08-22

Updated: 2026-08-25

Comments: 17 pages, 6 figures, comments welcome

License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/

Terminology

• Bispectrum — 130× in this paper · explained in 3 episodes
• Clustering — 34× in this paper · explained in 2 episodes
• Consistency — 11× in this paper · explained in 3 episodes
• Benchmark — 10× in this paper · explained in 2 episodes
• Abundance — 7× in this paper · explained in 1 episode
• Effective Field Theory — 5× in this paper
• Accuracy — 4× in this paper · explained in 1 episode
• Calibration — 4× in this paper · explained in 7 episodes
• Figure of Bias — 4× in this paper
• Figure of Merit — 3× in this paper
• Trace — 3× in this paper · explained in 2 episodes
• Hybrid Approach — 2× in this paper · explained in 4 episodes
• N-body simulations — 2× in this paper · explained in 2 episodes
• Robustness — 2× in this paper · explained in 5 episodes
• Degeneracy — 1× in this paper · explained in 3 episodes
• Effective Field Theory (EFT) — 1× in this paper · explained in 2 episodes
• Higher-order statistics — 1× in this paper · explained in 2 episodes
• Non-Gaussianity — 1× in this paper · explained in 2 episodes

Sources

• One-Loop Galaxy Bispectrum: Consistent Theory, Efficient Analysis with COBRA, and Implications for Cosmological Parameters
• SPHEREx: NASA's Near-Infrared Spectrophotmetric All-Sky Survey
• The FLAMINGO simulations data release
• The DESI Experiment, a whitepaper for Snowmass 2013
• Biased Tracers in Redshift Space in the EFT of Large-Scale Structure
• PolyBin3D: A Suite of Optimal and Efficient Power Spectrum and Bispectrum Estimators for Large-Scale Structure
• The BACCO simulation project: biased tracers in real space

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