Dark Energy Survey Year 3 results: Constraints on extensions to <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi mathvariant="normal">Λ</mml:mi><mml:mi>CDM</mml:mi></mml:math> with weak lensing and galaxy clustering
T. M. C. Abbott, M. Aguena, A. Alarcon, O. Alves, A. Amon, F. Andrade-Oliveira, J. Annis, S. Àvila, David Bacon, Eric J. Baxter, K. Bechtol, M. R. Becker, G. M. Bernstein, Simon Birrer, J. Blazek, S. Bocquet, A. Brandao-Souza, Sarah Bridle, D. Brooks, D. L. Burke, H. Camacho, A. Campos, A. Carnero Rosell, M. Carrasco Kind, J. Carretero, F. J. Castander, R. Cawthon, C. Chang, Angela Chen, R. Chen, A. Choi, Christopher J. Conselice, J. Cordero, M. Costanzi, M. Crocce, L. N. da Costa, M. E. S. Pereira, C. Davis, T. M. Davis, Joseph DeRose, S. Desai, Eleonora Di Valentino, H. T. Diehl, Scott Dodelson, P. Doel, C. Doux, A. Drlica-Wagner, K. Eckert, T. F. Eifler, F. Elsner, J. Elvin-Poole, S. Everett, Xiao Fang, Arya Farahi, I. Ferrero, A. Ferté, B. Flaugher, P. Fosalba, D. N. Friedel, O. Friedrich, J. Frieman, J. García-Bellido, M. Gatti, Leonardo Giani, T. Giannantonio, G. Giannini, D. Gruen, R. A. Gruendl, J. Gschwend, G. Gutiérrez, Nico Hamaus, I. Harrison, W. G. Hartley, K. Herner, S. R. Hinton, D. L. Hollowood, K. Honscheid, Hung-Jin Huang, Eric Huff, Dragan Huterer, Bhuvnesh Jain, D. J. James, Mike Jarvis, N Jeffrey, T. Jeltema, András Kovács, E. Krause, K. Kuehn, N. Kuropatkin, O. Lahav, S. Lee, P.-F. Léget, Pablo Lemos, C. Danielle Leonard, Andrew R. Liddle, M. Lima, H. Lin, N. MacCrann, J. L. Marshall, J. McCullough
Abstract
The authors use Dark Energy Survey data on galaxy clustering and lensing from the first three years of observations combined with five prominent external datasets. They robustly constrain six potential extensions to the currently prevalent cosmological paradigm of \ensuremath{\Lambda}CDM (Cold Dark Matter with a cosmological constant). All extensions would add significant new physics, such as deviations from General Relativity or non-zero spatial curvature, but no significant evidence for new physics is found.