Research Paper#Cosmology, Large-Scale Structure, Biased Tracers, Boltzmann Equation🔬 ResearchAnalyzed: Jan 3, 2026 08:49
Boltzmann Equation for Biased Tracers
Published:Dec 31, 2025 06:53
•1 min read
•ArXiv
Analysis
This paper presents a novel approach to modeling biased tracers in cosmology using the Boltzmann equation. It offers a unified description of density and velocity bias, providing a more complete and potentially more accurate framework than existing methods. The use of the Boltzmann equation allows for a self-consistent treatment of bias parameters and a connection to the Effective Field Theory of Large-Scale Structure.
Key Takeaways
- •Develops an effective theory for biased tracers using the Boltzmann equation.
- •Provides a unified description of density and velocity bias.
- •Predicts time- and scale-dependent bias parameters.
- •Reproduces the power spectrum of biased tracers obtained in the Effective Field Theory of Large-Scale Structure with fewer parameters.
Reference
“At linear order, this framework predicts time- and scale-dependent bias parameters in a self-consistent manner, encompassing peak bias as a special case while clarifying how velocity bias and higher-derivative effects arise.”