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author Bonici, Marco
Cañas-Herrera, Guadalupe
Carrilho, Pedro
Casas, Santiago
Moretti, Chiara
Pezzotta, Andrea
Aguena, Michel
Aricó, Giovanni
Baghkhani, Zahra
Baratto, Matteo
Bellini, Emilio
de Buck, Jip
Bertmann, Klara
Bose, Ben
Broxterman, Jeger C.
Burger, Pierre
Carbone, Carmelita
Chawak, Chaitanya
Coloma-Nadal, Jose
Crocce, Martin
Davini, Stefano
Duncan, Christopher A. J.
Farrens, Samuel
Goh, Lisa
Grimm, Nastassia
Hall, Alex
Kano, Ryusei R.
Kärcher, Martin
Keil, Felicitas
Kou, Raphaël
Linke, Laila
Loureiro, Arthur
Markovic, Katarina
Navarro-Gironés, David
Oppizzi, Filippo
Parimbelli, Gabriele
Porredon, Anna
Reischke, Robert
Zapatero, Jaime Ruiz
Sáez-Casares, Iñigo
Sakr, Ziad
Shah, Neel
Sciotti, Davide
Schaller, Matthieu
Sladoljev, Ivan
Souki, Arghavan
Srinivasan, Sankarshana
Tanidis, Konstantinos
Taylor, Peter L.
Tessore, Nicolas
Thummel, Linus
Tsedrik, Maria
Tutusaus, Isaac
Vedder, Casper
Wright, Angus H.
Zumalacárregui, Miguel
Zuntz, Joe
author_facet Bonici, Marco
Cañas-Herrera, Guadalupe
Carrilho, Pedro
Casas, Santiago
Moretti, Chiara
Pezzotta, Andrea
Aguena, Michel
Aricó, Giovanni
Baghkhani, Zahra
Baratto, Matteo
Bellini, Emilio
de Buck, Jip
Bertmann, Klara
Bose, Ben
Broxterman, Jeger C.
Burger, Pierre
Carbone, Carmelita
Chawak, Chaitanya
Coloma-Nadal, Jose
Crocce, Martin
Davini, Stefano
Duncan, Christopher A. J.
Farrens, Samuel
Goh, Lisa
Grimm, Nastassia
Hall, Alex
Kano, Ryusei R.
Kärcher, Martin
Keil, Felicitas
Kou, Raphaël
Linke, Laila
Loureiro, Arthur
Markovic, Katarina
Navarro-Gironés, David
Oppizzi, Filippo
Parimbelli, Gabriele
Porredon, Anna
Reischke, Robert
Zapatero, Jaime Ruiz
Sáez-Casares, Iñigo
Sakr, Ziad
Shah, Neel
Sciotti, Davide
Schaller, Matthieu
Sladoljev, Ivan
Souki, Arghavan
Srinivasan, Sankarshana
Tanidis, Konstantinos
Taylor, Peter L.
Tessore, Nicolas
Thummel, Linus
Tsedrik, Maria
Tutusaus, Isaac
Vedder, Casper
Wright, Angus H.
Zumalacárregui, Miguel
Zuntz, Joe
contents cloelib is a Python library developed to compute cosmological observables within the Cosmology Likelihood for Observables in Euclid (CLOE) ecosystem (cloe-org). As cosmology enters a precision era driven by galaxy survey missions such as Euclid, there is a growing need for flexible, efficient, and differentiable software capable of supporting next-generation inference pipelines. cloelib addresses these demands through a modular architecture that interfaces seamlessly with established Boltzmann solvers whilst incorporating JAX-based automatic differentiation to enable gradient-based methods. The library defines consistent protocols for background evolution, perturbations, and non-linear structure formation, and supports a wide range of observables, including photometric and spectroscopic large-scale structure probes, as well as cross-correlations with the Cosmic Microwave Background and galaxy clusters. In its finalised form, cloelib is intended to serve as the reference theory computation infrastructure for Euclid's first cosmological release, bridging traditional numerical cosmology with modern optimisation techniques and emerging machine learning approaches to inference.
format Preprint
id arxiv_https___arxiv_org_abs_2605_23839
institution arXiv
publishDate 2026
record_format arxiv
spellingShingle cloelib: A Flexible Python Library for Computing Cosmological Observables in the Euclid Era
Bonici, Marco
Cañas-Herrera, Guadalupe
Carrilho, Pedro
Casas, Santiago
Moretti, Chiara
Pezzotta, Andrea
Aguena, Michel
Aricó, Giovanni
Baghkhani, Zahra
Baratto, Matteo
Bellini, Emilio
de Buck, Jip
Bertmann, Klara
Bose, Ben
Broxterman, Jeger C.
Burger, Pierre
Carbone, Carmelita
Chawak, Chaitanya
Coloma-Nadal, Jose
Crocce, Martin
Davini, Stefano
Duncan, Christopher A. J.
Farrens, Samuel
Goh, Lisa
Grimm, Nastassia
Hall, Alex
Kano, Ryusei R.
Kärcher, Martin
Keil, Felicitas
Kou, Raphaël
Linke, Laila
Loureiro, Arthur
Markovic, Katarina
Navarro-Gironés, David
Oppizzi, Filippo
Parimbelli, Gabriele
Porredon, Anna
Reischke, Robert
Zapatero, Jaime Ruiz
Sáez-Casares, Iñigo
Sakr, Ziad
Shah, Neel
Sciotti, Davide
Schaller, Matthieu
Sladoljev, Ivan
Souki, Arghavan
Srinivasan, Sankarshana
Tanidis, Konstantinos
Taylor, Peter L.
Tessore, Nicolas
Thummel, Linus
Tsedrik, Maria
Tutusaus, Isaac
Vedder, Casper
Wright, Angus H.
Zumalacárregui, Miguel
Zuntz, Joe
Cosmology and Nongalactic Astrophysics
Instrumentation and Methods for Astrophysics
cloelib is a Python library developed to compute cosmological observables within the Cosmology Likelihood for Observables in Euclid (CLOE) ecosystem (cloe-org). As cosmology enters a precision era driven by galaxy survey missions such as Euclid, there is a growing need for flexible, efficient, and differentiable software capable of supporting next-generation inference pipelines. cloelib addresses these demands through a modular architecture that interfaces seamlessly with established Boltzmann solvers whilst incorporating JAX-based automatic differentiation to enable gradient-based methods. The library defines consistent protocols for background evolution, perturbations, and non-linear structure formation, and supports a wide range of observables, including photometric and spectroscopic large-scale structure probes, as well as cross-correlations with the Cosmic Microwave Background and galaxy clusters. In its finalised form, cloelib is intended to serve as the reference theory computation infrastructure for Euclid's first cosmological release, bridging traditional numerical cosmology with modern optimisation techniques and emerging machine learning approaches to inference.
title cloelib: A Flexible Python Library for Computing Cosmological Observables in the Euclid Era
topic Cosmology and Nongalactic Astrophysics
Instrumentation and Methods for Astrophysics
url https://arxiv.org/abs/2605.23839