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4 papers · 2 filters
Atomic Interferometer with Amplitude Gratings of Light and its Applications to Atom Based Tests of the Equivalence Principle
Sebastian Fray, Cristina Alvarez Diez, Theodor W. Hänsch +1
We have developed a matter wave interferometer based on the diffraction of atoms from effective absorption gratings of light. In a setup with cold rubidium atoms in an atomic fount…
2S hyperfine structure of atomic deuterium
N. Kolachevsky, P. Fendel, S. G. Karshenboim +1
We have measured the frequency splitting between the and hyperfine sublevels in atomic deuterium by an optical differential method based on two-photon D…
Cosmological Variation of the Fine Structure Constant versus a new Interaction
E. J. Angstmann, V. V. Flambaum, S. G. Karshenboim
We show why a dynamically varying fine structure constant does not impact on the Webb group's analysis as suggested by Bekenstein. We also provide a limit on the size of a possible…
New limit on the present temporal variation of the fine structure constant
E. Peik, B. Lipphardt, H. Schnatz +3
The comparison of different atomic transition frequencies over time can be used to determine the present value of the temporal derivative of the fine structure constant alpha in a…