emantis 1.1.0

A cosmological emulator for non-linear large-scale structure formation studies in alternative dark energy and gravity theories.

e-MANTIS: Emulator for Multiple observable ANalysis in extended cosmological TheorIeS

Table of Contents

• Description

• Installation

• Documentation and usage

• Licence

Description

e-MANTIS is an emulator for the study of the non-linear large-scale structure formation in the context of alternative dark energy and gravity theories. It uses Gaussian Processes to perform a fast and accurate interpolation between the outputs of high resolution cosmological N-body simulations. Currently, e-MANTIS is able to provide theoretical predictions for the following quantities:

• Matter power spectrum boost in f(R) gravity, described in The e-MANTIS emulator: fast predictions of the non-linear matter power spectrum in f(R)CDM cosmology.

• Halo mass function in f(R)CDM and wCDM cosmologies, described in COMING SOON.

Please cite the corresponding papers if you use e-MANTIS in your work.

More observables and cosmological models will be added in the future. Stay tuned!

Installation

You can install the emulator from PyPI via pip:

pip install emantis

Or you can directly clone the emulator from our public repository and install it from source:

git clone https://gitlab.obspm.fr/e-mantis/e-mantis.git
cd e-mantis
pip install [-e] .

The emulator only works with python >= 3.9. The main dependencies are:

• h5py (tested with version >= 3.8)

• scikit-learn (tested with version >= 1.0)

• numpy (tested with version >= 1.26)

• pydantic (tested with version >= 2.6)

• joblib (tested with version >= 1.3.2)

• tomli (tested with version >= 2.0, required only for python < 3.11)

All the dependencies should be installed automatically by pip.

Documentation and usage

The up-to-date documentation for this project (with code examples and a detailed API) is available here.

Licence

Copyright (C) 2023 Iñigo Sáez-Casares - Université Paris Cité

[e-mail]

This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.

You should have received a copy of the GNU General Public License along with this program. If not, see https://www.gnu.org/licenses/.