Peer-Reviewed Journal Details
Mandatory Fields
Ade, PAR;Aghanim, N;Arnaud, M;Ashdown, M;Aumont, J;Baccigalupi, C;Banday, AJ;Barreiro, RB;Battaner, E;Benabed, K;Benoit-Levy, A;Bernard, JP;Bersanelli, M;Bielewicz, P;Bond, JR;Borrill, J;Bouchet, FR;Burigana, C;Butler, RC;Calabrese, E;Chamballu, A;Chiang, HC;Christensen, PR;Clements, DL;Colombo, LPL;Couchot, F;Curto, A;Cuttaia, F;Danese, L;Davies, RD;Davis, RJ;de Bernardis, P;de Rosa, A;de Zotti, G;Delabrouille, J;Diego, JM;Dole, H;Dore, O;Dupac, X;Ensslin, TA;Eriksen, HK;Fabre, O;Finelli, F;Forni, O;Frailis, M;Franceschi, E;Galeotta, S;Galli, S;Ganga, K;Giard, M;Gonzalez-Nuevo, J;Gorski, KM;Gregorio, A;Gruppuso, A;Hansen, FK;Hanson, D;Harrison, DL;Henrot-Versille, S;Hernandez-Monteagudo, C;Herranz, D;Hildebrandt, SR;Hivon, E;Hobson, M;Holmes, WA;Hornstrup, A;Hovest, W;Huffenberger, KM;Jaffe, AH;Jones, WC;Keihanen, E;Keskitalo, R;Kneissl, R;Knoche, J;Kunz, M;Kurki-Suonio, H;Lamarre, JM;Lasenby, A;Lawrence, CR;Leonardi, R;Lesgourgues, J;Liguori, M;Lilje, PB;Linden-Vornle, M;Lopez-Caniego, M;Lubin, PM;Macias-Perez, JF;Mandolesi, N;Maris, M;Martin, PG;Martinez-Gonzalez, E;Masi, S;Matarrese, S;Mazzotta, P;Meinhold, PR;Melchiorri, A;Mendes, L;Menegoni, E;Mennella, A;Migliaccio, M;Miville-Deschenes, MA;Moneti, A;Montier, L;Morgante, G;Moss, A;Munshi, D;Murphy, JA;Naselsky, P;Nati, F;Natoli, P;Norgaard-Nielsen, HU;Noviello, F;Novikov, D;Novikov, I;Oxborrow, CA;Pagano, L;Pajot, F;Paoletti, D;Pasian, F;Patanchon, G;Perdereau, O;Perotto, L;Perrotta, F;Piacentini, F;Piat, M;Pierpaoli, E;Pietrobon, D;Plaszczynski, S;Pointecouteau, E;Polenta, G;Ponthieu, N;Popa, L;Pratt, GW;Prunet, S;Rachen, JP;Rebolo, R;Reinecke, M;Remazeilles, M;Renault, C;Ricciardi, S;Ristorcelli, I;Rocha, G;Roudier, G;Rusholme, B;Sandri, M;Savini, G;Scott, D;Spencer, LD;Stolyarov, V;Sudiwala, R;Sutton, D;Suur-Uski, AS;Sygnet, JF;Tauber, JA;Tavagnacco, D;Terenzi, L;Toffolatti, L;Tomasi, M;Tristram, M;Tucci, M;Uzan, JP;Valenziano, L;Valiviita, J;Van Tent, B;Vielva, P;Villa, F;Wade, LA;Yvon, D;Zacchei, A;Zonca, A
2015
August
Astronomy and Astrophysics
Planck intermediate results XXIV. Constraints on variations in fundamental constants
Published
21 ()
Optional Fields
FINE-STRUCTURE CONSTANT MICROWAVE BACKGROUND ANISOTROPIES BARYON ACOUSTIC-OSCILLATIONS TIME-VARIATION PHYSICAL CONSTANTS ANALYTIC APPROACH HUBBLE CONSTANT ALPHA COSMOLOGY UNIVERSE
580
Any variation in the fundamental physical constants, more particularly in the fine structure constant, a, or in the mass of the electron, me, affects the recombination history of the Universe and cause an imprint on the cosmic microwave background angular power spectra. We show that the Planck data allow one to improve the constraint on the time variation of the fine structure constant at redshift z - 10(3) by about a factor of 5 compared to WMAP data, as well as to break the degeneracy with the Hubble constant, H-0. In addition to a, we can set a constraint on the variation in the mass of the electron, me, and in the simultaneous variation of the two constants. We examine in detail the degeneracies between fundamental constants and the cosmological parameters, in order to compare the limits obtained from Planck and WMAP and to determine the constraining power gained by including other cosmological probes. We conclude that independent time variations of the fine structure constant and of the mass of the electron are constrained by Planck to Delta alpha/alpha = (3.6 +/- 3.7) x 10(-3) and Delta m(e)/m(e) = (4 +/- 11) x 10(-3) at the 68% confidence level. We also investigate the possibility of a spatial variation of the fine structure constant. The relative amplitude of a dipolar spatial variation in a (corresponding to a gradient across our Hubble volume) is constrained to be delta alpha/alpha = (-2.4 +/- 3.7) x 10(-2).
LES ULIS CEDEX A
1432-0746
10.1051/0004-6361/201424496
Grant Details