Euclid preparation: IX. EuclidEmulator2 – Power spectrum emulation with massive neutrinos and self-consistent dark energy perturbations

作     者：Knabenhansz, M. Stadel, J. Potter, D. Dakin, J. Hannestad, S. Tram, T. Marelli, S. Schneider, A. Teyssier, R. Andreon, S. Auricchio, N. Baccigalupi, C. Balaguera-Antolínez, A. Baldi, M. Bardelli, S. Battaglia, P. Bender, R. Biviano, A. Bodendorf, C. Bozzo, E. Branchini, E. Brescia, M. Burigana, C. Cabanac, R. Camera, S. Capobianco, V. Cappi, A. Carbone, C. Carretero, J. Carvalho, C.S. Casas, R. Casas, S. Castellano, M. Castignani, G. Cavuoti, S. Cledassou, R. Colodro-Conde, C. Congedo, G. Conselice, C.J. Conversi, L. Copin, Y. Corcione, L. Coupon, J. Courtois, H.M. da Silva, A. de la Torre, S. Di Ferdinando, D. Duncan, C.A.J. Dupac, X. Fabbian, G. Farrens, S. Ferreira, P.G. Finelli, F. Frailis, M. Franceschi, E. Galeotta, S. Garilli, B. Giocoli, C. Gozaliasl, G. Graciá-Carpio, J. Grupp, F. Guzzo, L. Holmes, W. Hormuth, F. Israel, H. Jahnke, K. Keihanen, E. Kermiche, S. Kirkpatrick, C.C. Kubik, B. Kunz, M. Kurki-Suonio, H. Ligori, S. Lilje, P.B. Lloro, I. Maino, D. Marggraf, O. Markovic, K. Martinet, N. Marulli, F. Massey, R. Mauri, N. Maurogordato, S. Medinaceli, E. Meneghetti, M. Metcalf, B. Meylan, G. Moresco, M. Morin, B. Moscardini, L. Munari, E. Neissner, C. Niemi, S.M. Padilla, C. Paltani, S. Pasian, F. Patrizii, L. Pettorino, V. Pires, S. Polenta, G. Poncet, M. Raison, F. Renzi, A. Rhodes, J. Riccio, G. Romelli, E. Roncarelli, M. Saglia, R. Sánchez, A.G. Sapone, D. Schneider, P. Scottez, V. Secroun, A. Serrano, S. Sirignano, C. Sirri, G. Stanco, L. Sureau, F. Tallada Crespí, P. Taylor, A.N. Tenti, M. Tereno, I. Toledo-Moreo, R. Torradeflot, F. Valenziano, L. Valiviita, J. Vassallo, T. Viel, M. Wang, Y. Welikala, N. Whittaker, L. Zacchei, A. Zucca, E. 

作者机构：Institute for Computational Science University of Zurich Winterthurerstrasse 190 Zurich8057 Switzerland Department of Physics and Astronomy University of Aarhus Ny Munkegade 120 Aarhus CDK-8000 Denmark Risk Safety and Uncertainty Quantification Dept. of Civil Engineering ETH Zurich Stefano-Franscini-Platz 5 Zurich8093 Switzerland Institute for Particle Physics and Astrophysics Dept. of Physics ETH Zurich Wolfgang-Pauli-Strasse 27 Zurich8093 Switzerland INAF-Osservatorio Astronomico di Brera via Brera 28 MilanoI-20122 Italy INAF-Osservatorio di Astrofisica e Scienza dello Spazio di Bologna via Piero Gobetti 93/3 BolognaI-40129 Italy SISSA International School for Advanced Studies via Bonomea 265 Trieste TSI-34136 Italy INFN Sezione di Trieste via Valerio 2 Trieste TSI-34127 Italy INAF-Osservatorio Astronomico di Trieste via G. B. Tiepolo 11 TriesteI-34131 Italy Universidad de la Laguna E-38206 San Cristóbal de La Laguna Tenerife Spain Instituto de Astrofísica de Canarias Calle vía Làctea s/n San Cristóbal de la Laguna Tenerife38204 Spain  via Gobetti 93/3 BolognaI-40127 Italy Dipartimento di Fisica e Astronomia Universitá di Bologna via Gobetti 93/2 BolognaI-40129 Italy INFN-Sezione di Bologna viale Berti Pichat 6/2 BolognaI-40127 Italy INAF-IASF Bologna via Piero Gobetti 101 BolognaI-40129 Italy Universitäts-Sternwarte München Fakultät für Physik Ludwig-Maximilians-Universität München Scheinerstrasse 1 München81679 Germany Max Planck Institute for Extraterrestrial Physics Giessenbachstr. 1 GarchingD-85748 Germany IFPU Institute for Fundamental Physics of the Universe via Beirut 2 Trieste34151 Italy Department of Astronomy University of Geneva ch. d’Écogia 16 VersoixCH-1290 Switzerland INFN-Sezione di Roma Tre via della Vasca Navale 84 RomaI-00146 Italy Department of Mathematics and Physics Roma Tre University via della Vasca Navale 84 RomeI-00146 Italy INAF-Osservatorio Astronomico di Roma via Frascati 33 Monteporzio CatoneI-00078 Italy INAF-Osservatorio Astronomico di Capodimonte via Moiariello 16 NapoliI-80131 Italy Dipartimento di Fisica e Scienze della Terra Universitá degli Studi di Ferrara via Giuseppe Saragat 1 FerraraI-44122 Italy INAF Istituto di Radioastronomia via Piero Gobetti 101 BolognaI-40129 Italy  Université de Toulouse CNRS UPS CNES 14 Av. Edouard Belin ToulouseF-31400 France INFN-Sezione di Torino via P. Giuria 1 TorinoI-10125 Italy Dipartimento di Fisica Universitá degli Studi di Torino via P. Giuria 1 TorinoI-10125 Italy I-10025 Italy Université Côte d’Azur Observatoire de la Côte d’Azur CNRS Laboratoire Lagrange Bd de l’Observatoire CS 34229 Nice cedex 406304 France INAF-IASF Milano via Alfonso Corti 12 MilanoI-20133 Italy 08193 Spain Instituto de Astrofísica e Ciências do Espaço Faculdade de Ciências Universidade de Lisboa Tapada da Ajuda LisboaPT-1349-018 Portugal  Campus UAB Carrer de Can Magrans s/n Barcelona08193 Spain  Barcelona08034 Spain AIM CEA CNRS Université Paris-Saclay Université Paris Diderot Sorbonne Paris Cité Gif-sur-YvetteF-91191 France Observatoire de Sauverny Ecole Polytechnique Fédérale de Lausanne VersoixCH-1290 Switzerland Department of Physics E. Pancini University Federico II via Cinthia 6 NapoliI-80126 Italy INFN Section of Naples via Cinthia 6 NapoliI-80126 Italy Centre National d’Etudes Spatiales Toulouse France Institute for Astronomy University of Edinburgh Royal Observatory Blackford Hill EdinburghEH9 3HJ United Kingdom University of Nottingham University Park NottinghamNG7 2RD United Kingdom European Space Agency ESRIN Largo Galileo Galilei 1 Frascati Roma00044 Italy ESAC ESA Camino Bajo del Castillo s/n. Urb. Villafranca del Castillo Villanueva de la Cañada Madrid28692 Spain Univ Lyon Univ Claude Bernard Lyon 1 CNRS/IN2P3 IP2I Lyon UMR 5822 VilleurbanneF-69622 France University of Lyon UCB Lyon 1 CNRS/IN2P3 IUF IP2I Lyon France Departamento de Física Faculdade de Ciências Universidade de Lisboa Edifício C8 Campo Grande LisboaPT1749-016 Portugal Instituto de Astrofísica e Ciências do Espaço Faculdade de Ciências Universidade de Lisboa Campo Grande LisboaPT-1749-016 Portugal Aix-Marseille Univ CNRS CNES LAM Marseille France Department of Physics Oxford University Keble Road OxfordOX1 3RH United Kingdom Department of Physics & Astronomy University of Sussex BrightonBN1 9QH United Kingdom INFN-Bologna via Irnerio 46 BolognaI-40126 Italy Department of Physics University of P.O. Box 64 Helsinki00014 Finland Department of Physics Helsinki Institute of Physics University of Gustaf Hällströmin katu 2 Helsinki00014 Finland Dipartimento di Fisica Aldo Pontremoli Universitá degli Studi di Milano via Celoria 16 MilanoI-20133 Italy INFN-Sezione di Milano via Celoria 16 MilanoI-20133 Italy 

出 版 物：《arXiv》 (arXiv)

年 卷 期：2020年

核心收录：

主　　题：Power spectrum 

摘      要：We present a new, updated version of the EuclidEmulator (called EuclidEmulator2), a fast and accurate predictor for the nonlinear correction of the matter power spectrum. Percent-level accurate emulation is now supported in the eight-dimensional parameter space of w0waCDM+ ∑ mv models between redshift z = 0 and z = 3 for spatial scales within the range 0.01 ℎ Mpc−1 ≤ k ≤ 10 ℎ Mpc−1. In order to achieve this level of accuracy, we have had to improve the quality of the underlying N-body simulations used as training data: (i) we use self-consistent linear evolution of non-dark matter species such as massive neutrinos, photons, dark energy and the metric field, (ii) we perform the simulations in the so-called N-body gauge, which allows one to interpret the results in the framework of general relativity, (iii) we run over 250 high-resolution simulations with 30003 particles in boxes of 1(ℎ−1 Gpc)3 volumes based on paired-and-fixed initial conditions and (iv) we provide a resolution correction that can be applied to emulated results as a post-processing step in order to drastically reduce systematic biases on small scales due to residual resolution effects in the simulations. We find that the inclusion of the dynamical dark energy parameter wa significantly increases the complexity and expense of creating the emulator. The high fidelity of EuclidEmulator2 is tested in various comparisons against N-body simulations as well as alternative fast predictors like HALOFIT, HMCode and CosmicEmu. A blind test is successfully performed against the Euclid Flagship v2.0 simulation. Nonlinear correction factors emulated with EuclidEmulator2 are accurate at the level of 1% or better for 0.01 ℎ Mpc−1 ≤ k ≤ 10 ℎ Mpc−1 and z ≤ 3 compared to high-resolution dark matter only simulations. EuclidEmulator2 is publicly available at https://***/miknab/EuclidEmulator2. © 2020, CC-BY-NC-SA.