Results 21 to 30 of about 2,148 (47)

On dilatons with intrinsic decouplings

, 2016
In this paper, we show that there exists a class of dilaton models with non-trivial scalar-Ricci and scalar-matter couplings that strongly reduces observational deviations from general relativity in the dust limit.
Hees, Aurélien, Minazzoli, Olivier
core   +2 more sources

Constraints on muon-specific dark forces

, 2014
The recent measurement of the Lamb shift in muonic hydrogen allows for the most precise extraction of the charge radius of the proton which is currently in conflict with other determinations based on $e-p$ scattering and hydrogen spectroscopy.
Karshenboim, Savely G., McKeen, David, Pospelov, Maxim   +2 more
core   +1 more source

Transition frequency shifts with fine structure constant variation for Fe II: Breit and core-valence correlation correction

, 2007
Transition frequencies of Fe II ion are known to be very sensitive to variation of the fine structure constant \alpha. The resonance absorption lines of Fe II from objects at cosmological distances are used in a search for the possible variation of ...
C. E. Moore, D. Reimers, I. I. Tupitsyn, K. V. Koshelev, M. G. Kozlov, P. Bogdanovich, P. Molaro, S. A. Levshakov, S. G. Porsev, V. F. Bratsev   +9 more
core   +1 more source

Precision Measurement of Transition Matrix Elements via Light Shift Cancellation

, 2012
We present a method for accurate determination of atomic transition matrix elements at the 10^{-3} level. Measurements of the ac Stark (light) shift around "magic-zero" wavelengths, where the light shift vanishes, provide precise constraints on the ...
Herold, C. D., Li, X., Porto, J. V., Rolston, S. L., Safronova, M. S., Vaidya, V. D.   +5 more
core   +1 more source

Probing new intra-atomic force with isotope shifts

, 2017
In the development of atomic clocks, some atomic transition frequencies are measured with remarkable precision. These measured spectra may include effects of a new force mediated by a weakly interacting boson.
Mikami, Kyoko, Tanaka, Minoru, Yamamoto, Yasuhiro   +2 more
core   +1 more source

Constraints on Hidden Photon Models from Electron g-2 and Hydrogen Spectroscopy

, 2012
The hidden photon model is one of the simplest models which can explain the anomaly of the muon anomalous magnetic moment (g-2). The experimental constraints are studied in detail, which come from the electron g-2 and the hydrogen transition frequencies.
A. Hansson, B. deB. Darwent, C. E. Moore, C. E. Moore, C. E. Moore, C. E. Moore, C. E. Moore, C. E. Moore, Go Mishima, J. Flowers, J. Prades, Koichi Hamaguchi, Motoi Endo, V. Popov   +13 more
core   +1 more source

Theory of the 2S-2P Lamb shift and 2S hyperfine splitting in muonic hydrogen

, 2012
The 7 standard deviations between the proton rms charge radius from muonic hydrogen and the CODATA-10 value from hydrogen spectroscopy and electron-scattering has caused considerable discussions.
Adamczak, Adamuscin, Adamuscin, Aldo Antognini, Anthony, Antognini, Antognini, Arnoult, Arrington, Barbieri, Barger, Barger, Batell, Bernauer, Biraben, Birse, Blunden, Borie, Borie, Borie, Brax, Brodsky, Carlson, Carlson, Carlson, Carlson, Carroll, Cherednikova, Chu, Cloet, Collins, Danzmann, de Beauvoir, De Rújula, De Rújula, Distler, Eides, Eides, Eides, Eides, Fischer, Flowers, Franz Kottmann, François Biraben, François Nez, Friar, Friar, Friar, Gilad, Hagley, Hanneke, Hasell, Hill, Hill, Hägler, Ivanov, Jaeckel, Jentschura, Jentschura, Jentschura, Jentschura, Jentschura, Karr, Karshenboim, Karshenboim, Karshenboim, Karshenboim, Karshenboim, Karshenboim, Kelly, Kinoshita, Kohl, Ledwig, Lorenz, Lundeen, Martynenko, Martynenko, Martynenko, Martynenko, Martynenko, McKeen, Miller, Mohr, Müller, Pachucki, Pachucki, Parthey, Parthey, Paul Indelicato, Petermann, Pineda, Pineda, Pohl, Pohl, Pohl, Prok, Randolf Pohl, Raue, Rivas, Romanov, Ron, Schwob, Sick, Sick, Sick, Slifer, Sturm, Suura, Tan, Tucker-Smith, Vanderhaeghen, Wesselmann, Zemach, Zhan   +113 more
core   +1 more source

Structure of the Alkali-metal-atom-Strontium molecular ions: towards photoassociation and formation of cold molecular ions

, 2011
The potential energy curves, permanent and transition dipole moments, and the static dipolar polarizability, of molecular ions composed of one alkali-metal atom and a Strontium ion are determined with a quantum chemistry approach.
M. Aymar, Moore C., O. Dulieu, R. Guérout   +3 more
core   +1 more source

Atomic Aerogel Materials (or Single‐Atom Aerogels): An Interesting New Paradigm in Materials Science and Catalysis Science

Advanced Materials, 2023
Ze-sheng Li, Chang-Lin Yu
exaly  

Application of atom probe tomography in understanding high entropy alloys: 3D local chemical compositions in atomic scale analysis

Progress in Materials Science, 2022
Gang Sha, Rong Hu, Shenbao Jin
exaly