Physics potential of the International Axion Observatory (IAXO) by Armengaud, E, Attie, D, Basso, S, Brun, P, Bykovskiy, N, Carmona, J, Castel, J, Cebrian, S, Cicoli, M, Civitani, M, Cogollos, C, Conlon, J, Costa, D, Dafni, T, Daido, R, Derbin, A, Descalle, M, Desch, K, Dratchnev, I, Doebrich, B, Dudarev, A, Ferrer-Ribas, E, Fleck, I, Galan, J, Galanti, G, Garrido, L, Gascon, D, Gastaldo, L, Germani, C, Ghisellini, G, Giannotti, M, Giomataris, I, Gninenko, S, Golubev, N, Graciani, R, Irastorza, I, Jakovcic, K, Kaminski, J, Krcmar, M, Krieger, C, Lakic, B, Lasserre, T, Laurent, P, Limousin, O, Lindner, A, Lomskaya, I, Lubsandorzhiev, B, Luzon, G, Marsh, M, Mergalejo, C, Mescia, F, Meyer, M, Miralda-Escude, J, Mirallas, H, Muratova, V, Navick, X, Nones, C, Notari, A, Nozik, A, Ortiz De Solorzano, A, Pantuev, V, Papaevangelou, T, Pareschi, G, Perez, K, Picatoste, E, Pivovaroff, M, Redondo, J, Ringwald, A, Roncadelli, M, Ruiz-Choliz, E, Ruz, J, Saikawa, K, Salvado, J, Samperiz, M, Schiffer, T, Schmidt, S, Schneekloth, U, Schott, M, Silva, H, Tagliaferri, G, Takahashi, F, Tavecchio, F, Ten Kate, H, Tkachev, I, Troitsky, S, Unzhakov, E, Vedrine, P, Vogel, J, Weinsheimer, C, Weltman, A, Yin, W