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    Exploring Cosmic Origins with CORE: Inflation

    Finelli, F. and Bucher, M. and Achúcarro, A. and Ballardini, M. and Bartolo, N. and Baumann, D. and Clesse, S. and Errard, J. and Handley, W. and Hindmarsh, Mark and Kiiveri, K. and Kunz, M. and Lasenby, A. and Liguori, M. and Paoletti, D. and Ringeval, Christophe and Valiviita, J. and Van Tent, B. and Vennin, V. and Ade, P.A.R. and Allison, R. and Arroja, Frederico and Ashdown, M. and Banday, A.J. and Banerji, R. and Bartlett, J.G. and Basak, S. and Baselmans, J. and De Bernardis, P. and Bersanelli, M. and Bonaldi, A. and Borrill, J. and Bouchet, F.R. and Boulanger, F. and Brinckmann, T. and Burigana, C. and Busselli, A. and Cai, Z.Y. and Calvo, M. and Carvalho, C.S. and Castellano, Gabriella and Challinor, A. and Chluba, J. and Colantoni, I. and Crook, M. and D’Alessandro, Giuseppe and D’Amico, Guido and Delabrouille, J. and Desjacques, Vincent and de Zotti, G. and Diego, J.M. and Di Valentino, E. and Feeney, S. and Fergusson, James R. and Fernandez-Cobos, R. and Ferraro, S. and Forastieri, F. and Galli, S. and García-Bellido, J. and de Gasperis, G. and Genova-Santos, R.T. and Gerbino, M. and Gonzalez-Nuevo, J. and Grandis, S. and Greenslade, J. and Hagstotz, S. and Hanany, S. and Hazra, Dhiraj K. and Hernandez-Monteagudo, C. and Hervias-Caimapo, C. and Hills, M. and Hivon, E. and Hu, B. and Kisner, T.S. and Kitching, T. and Kovetz, Ely D. and Kurki-Suonio, H. and Lamagna, L. and Lattanzi, M. and Lesgourgues, J. and Lewis, A. and Lindholm, V. and Lizarraga, Joanes and Lopez-Caniego, M. and Luzzi, G. and Maffei, B. and Mandolesi, N. and Martinez-Gonzalez, E. and Martins, Carlos J.A.P. and Masi, S. and McCarthy, D. and Matarrese, S. and Melchiorri, A. and Melin, J.-B. and Molinari, D. and Monfardini, A. and Natoli, P. and Negrello, M. and Notari, A. and Oppizzi, Filippo and Paiella, A. and Pajer, E. and Patanchon, G. and Patil, Subodh P. and Piat, M. and Pisano, G. and Polastri, L. and Polenta, G. and Pollo, A. and Poulin, V. and Quartin, M. and Ravenni, Andrea and Remazeilles, M. and Renzi, A. and Roest, Diederik and Roman, M. and Rubino-Martin, J.A. and Salvati, L. and Starobinsky, Alexei A. and Tartari, A. and Tasinato, G. and Tomasi, M. and Torrado, Jesus and Trappe, Neil and Trombetti, T. and Tucker, C. and Tucci, M. and Urrestilla, Jon and van de Weygaert, R. and Vielva, P. and Vittorio, N. and Young, K. (2018) Exploring Cosmic Origins with CORE: Inflation. Journal of Cosmology and Astroparticle Physics, 4 (016). ISSN 1475-7516

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    We forecast the scientific capabilities to improve our understanding of cosmic inflation of CORE, a proposed CMB space satellite submitted in response to the ESA fifth call for a medium-size mission opportunity. The CORE satellite will map the CMB anisotropies in temperature and polarization in 19 frequency channels spanning the range 60-600 GHz. CORE will have an aggregate noise sensitivity of 1.7µK· arcmin and an angular resolution of 5’ at 200 GHz. We explore the impact of telescope size and noise sensitivity on the inflation science return by making forecasts for several instrumental configurations. This study assumes that the lower and higher frequency channels suffice to remove foreground contaminations and complements other related studies of component separation and systematic effects, which will be reported in other papers of the series “Exploring Cosmic Origins with CORE.” We forecast the capability to determine key inflationary parameters, to lower the detection limit for the tensor-to-scalar ratio down to the 10−3 level, to chart the landscape of single field slow-roll inflationary models, to constrain the epoch of reheating, thus connecting inflation to the standard radiation-matter dominated Big Bang era, to reconstruct the primordial power spectrum, to constrain the contribution from isocurvature perturbations to the 10−3 level, to improve constraints on the cosmic string tension to a level below the presumptive GUT scale, and to improve the current measurements of primordial non-Gaussianities down to the f local NL < 1 level. For all the models explored, CORE alone will improve significantly on the present constraints on the physics of inflation. Its capabilities will be further enhanced by combining with complementary future cosmological observations.

    Item Type: Article
    Additional Information: This is the preprint version of the published article, which is available at: F. Finelli et al JCAP04(2018)016
    Keywords: Exploring; Cosmic Origins; CORE; Inflation;
    Academic Unit: Faculty of Science and Engineering > Experimental Physics
    Item ID: 13315
    Identification Number:
    Depositing User: Dr. Neil Trappe
    Date Deposited: 29 Sep 2020 15:05
    Journal or Publication Title: Journal of Cosmology and Astroparticle Physics
    Publisher: IOP Publishing
    Refereed: Yes

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