jaxcapse

Repo containing the jaxcapse emulator.

Installation and usage

In order to install jaxcapse, you can just run

pip install jaxcapse

If you prefer to use the latest version from the repository, you can clone it, enter it, and run

pip install .

In order to use the emulators, you have to import jaxcapse and load a trained emulator

import jaxcapse
import jax.numpy as np
trained_emu = jaxcapse.load_emulator("/path/to/emu/")

Then you are good to! You have to create an input array and retrieve your calculation result

input_array = np.array([...]) #write in the relevant numbers
result = trained_emu.get_Cl(input_array)

For a more detailed explanation, check the tutorial in the notebooks folder, which also shows a comparison with the standard CAMB Boltzmann solver.

Citing

Free usage of the software in this repository is provided, given that you cite our release paper.

M. Bonici, F. Bianchini, J. Ruiz-Zapatero, Capse: efficient and auto-differentiable CMB power spectra emulation