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9 papers · 1 filter
The Spinless Relativistic Hellmann Problem
Wolfgang Lucha, Franz F. Schöberl
We compile some easily deducible information on the discrete eigenvalue spectra of spinless Salpeter equations encompassing, besides a relativistic kinetic term, interactions which…
The influence of pump coherence on the generation of position-momentum entanglement in down-conversion
Wuhong Zhang, Robert Fickler, Enno Giese +2
Strong correlations in two conjugate variables are the signature of quantum entanglement and have played a key role in the development of modern physics. Entangled photons have bec…
Ultrafast coherent excitation of a Ca ion
D. Heinrich, M. Guggemos, M. Guevara-Bertsch +3
Trapped ions are a well-studied and promising system for the realization of a scalable quantum computer. Faster quantum gates would greatly improve the applicability of such a syst…
Solar bursts as can be observed from the lunar farside with a single antenna at very low frequencies
A. A. Stanislavsky, A. A. Konovalenko, S. N. Yerin +10
Earth-based observations are complicated by the opacity of Earth's ionosphere at very low frequencies and strong man-made radio frequency interference. This explains long standing…
Cosmological beam dump: constraints on dark scalars mixed with the Higgs boson
Anthony Fradette, Maxim Pospelov, Josef Pradler +1
Precision cosmology provides a sensitive probe of extremely weakly coupled states due to thermal freeze-in production, with subsequent decays impacting physics during well-tested c…
A hydrogen beam to characterize the ASACUSA antihydrogen hyperfine spectrometer
C. Malbrunot, M. Diermaier, M. C. Simon +19
The antihydrogen programme of the ASACUSA collaboration at the antiproton decelerator of CERN focuses on Rabi-type measurements of the ground-state hyperfine splitting of antihydro…