GitHunt
XZ

xzackli/Bolt.jl

differentiable boltzmann code

cmbcosmologydifferentiablejulia

Bolt

Dev

DOI

Build Status
codecov

⚡ Bolt is a pure-Julia integrator for the Boltzmann equations in cosmology. It can accurately compute the gradient of the CMB power spectrum, with respect to cosmological parameters, using forward-mode automatic differentiation.

Contributors: Jamie Sullivan, Zack Li, Marius Millea

Install

Bolt requires Julia 1.5+. To install, from the package prompt, run:

pkg> add https://github.com/xzackli/Bolt.jl

A CMB temperature power spectrum and gradient from Bolt.jl.

A linear matter power spectrum and gradient from Bolt.jl.

Languages

Jupyter Notebook74.6%Julia25.4%

Contributors

XZJMGIMA
MIT License
Created January 10, 2021
Updated April 26, 2025
xzackli/Bolt.jl | GitHunt