Cosmological variation of the fine-structure constant versus a new interaction

Journal Article · Fri Oct 01 00:00:00 EDT 2004 · Physical Review. A

DOI:https://doi.org/10.1103/PhysRevA.70.044104· OSTI ID:20646446

Angstmann, E J; Flambaum, V V; Karshenboim, S G ^[1]

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1. School of Physics, University of New South Wales, Sydney 2052 (Australia)

We show that using the modified form of the Dirac Hamiltonian as suggested by Bekenstein does not affect the analysis of QSO data pertaining to a measurement of {alpha} variation. We obtain the present time limit on Bekenstein's parameter, tan{sup 2} {chi}=(0.2{+-}0.7)x10{sup -6}, from the measurement of the hydrogen 2p fine structure using a value of {alpha} obtained from different experiments.

• OSTI ID: 20646446
• Journal Information: Physical Review. A, Vol. 70, Issue 4; Other Information: DOI: 10.1103/PhysRevA.70.044104; (c) 2004 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 1050-2947
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ATOMS
BASIC INTERACTIONS
COSMOLOGY
FINE STRUCTURE
HAMILTONIANS
HYDROGEN
SOMMERFELD CONSTANT
VARIATIONS