Results 11 to 20 of about 2,148 (47)

Hadronic contributions to the anomalous magnetic moment of the electron and the hyperfine splitting of muonium

open access: yes, 2012
Motivated by recent progress of theory and experiment on the anomalous magnetic moment of the electron, a_e, we update the hadronic contributions to a_e.
Nomura, Daisuke, Teubner, Thomas
core   +1 more source

The RMS Charge Radius of the Proton and Zemach Moments [PDF]

open access: yes, 2011
On the basis of recent precise measurements of the electric form factor of the proton, the Zemach moments, needed as input parameters for the determination of the proton rms radius from the measurement of the Lamb shift in muonic hydrogen, are calculated.
Arrington   +28 more
core   +1 more source

Variation of fundamental constants in space and time: theory and observations

open access: yes, 2008
Review of recent works devoted to the temporal and spatial variation of the fundamental constants and dependence of the fundamental constants on the gravitational potential (violation of local position invariance) is presented. We discuss the variation
Flambaum, V. V.
core   +1 more source

Slalom in complex time: emergence of low-energy structures in tunnel ionization via complex time contours

open access: yes, 2015
The ionization of atoms by strong, low-frequency fields can generally be described well by assuming that the photoelectron is, after the ionization step, completely at the mercy of the laser field. However, certain phenomena, like the recent discovery of
Ivanov, Misha, Pisanty, Emilio
core   +1 more source

Determination of transition frequencies in a single $^{138}$Ba$^{+}$ ion [PDF]

open access: yes, 2015
Transition frequencies between low-lying energy levels in a single trapped $^{138}$Ba$^{+}$ ion have been measured with laser spectroscopy referenced to an optical frequency comb.
Dijck, E. A.   +6 more
core   +2 more sources

Lorentz meets Fano spectral line shapes: A universal phase and its laser control

open access: yes, 2013
Symmetric Lorentzian and asymmetric Fano line shapes are fundamental spectroscopic signatures that quantify the structural and dynamical properties of nuclei, atoms, molecules, and solids.
Evers, Jörg   +8 more
core   +1 more source

Two-state wave packet for strong field-free molecular orientation [PDF]

open access: yes, 2015
We demonstrate strong laser-field-free orientation of absolute-ground-state carbonyl sulfide molecules. The molecules are oriented by the combination of a 485-ps-long non-resonant laser pulse and a weak static electric field. The edges of the laser pulse
González-Férez, Rosario   +5 more
core   +2 more sources

Computation of atomic astrophysical opacities

open access: yes, 2018
The revision of the standard Los Alamos opacities in the 1980-1990s by a group from the Lawrence Livermore National Laboratory (OPAL) and the Opacity Project (OP) consortium was an early example of collaborative big-data science, leading to reliable data
Mendoza, Claudio
core   +1 more source

Current and future perspectives of positronium and muonium spectroscopy as dark sectors probe [PDF]

open access: yes, 2019
Positronium and Muonium are purely leptonic atoms and hence free of an internal sub-structure. This qualifies them as potentially well suited systems to probe the existence of physics beyond the Standard Model. We hence carry out a comprehensive study of
Frugiuele, Claudia   +2 more
core   +3 more sources

Relaxation oscillations, stability, and cavity feedback in a superradiant Raman laser

open access: yes, 2013
We experimentally study the relaxation oscillations and amplitude stability properties of an optical laser operating deep into the bad-cavity regime using a laser-cooled $^{87}$Rb Raman laser.
A. E. Siegman   +5 more
core   +1 more source

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