Astronomical constraints on the cosmic evolution of the fine structure constant and possible quantum dimensions

Astronomical constraints on the cosmic evolution of the fine structure constant and possible quantum dimensions

We present measurements of absorption by the 21 cm hyperfine transition of neutral hydrogen toward radio sources at substantial look-back times. These data are used in combination with observations of rotational transitions of common interstellar molecules to set limits on the evolution of the fine...

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Veröffentlicht in:Physical review letters 2000-12, Vol.85 (26 Pt 1), p.5511-5514
Hauptverfasser: Carilli, C L, Menten, K M, Stocke, J T, Perlman, E, Vermeulen, R, Briggs, F, de Bruyn, A G, Conway, J, Moore, C P
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container_end_page 5514
container_issue 26 Pt 1
container_start_page 5511
container_title Physical review letters
container_volume 85
creator Carilli, C L
Menten, K M
Stocke, J T
Perlman, E
Vermeulen, R
Briggs, F
de Bruyn, A G
Conway, J
Moore, C P
description We present measurements of absorption by the 21 cm hyperfine transition of neutral hydrogen toward radio sources at substantial look-back times. These data are used in combination with observations of rotational transitions of common interstellar molecules to set limits on the evolution of the fine structure constant: alpha/ alpha
doi_str_mv 10.1103/physrevlett.85.5511
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title Astronomical constraints on the cosmic evolution of the fine structure constant and possible quantum dimensions
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