Results 1 to 10 of about 1,004,039 (42)
Crisis and catharsis in atomic physics [PDF]
Science 370, 6520 (2020), 2022 Precise measurement of an atomic hydrogen transition resolves the proton size puzzle.
arxiv +1 more source
Atomic clocks and dark-matter signatures [PDF]
J. Phys. Conf. Ser. 723, 6 (2016), 2016 Recent developments in searches for dark-matter candidates with atomic clocks are reviewed. The intended audience is the atomic clock community.
arxiv +1 more source
Constraint on axion-like particles from atomic physics [PDF]
Physical Review A84, 064502 (2011), 2011 A possibility to constrain axion-like particles from precision atomic physics is considered.
arxiv +1 more source
Excitation Suppression Due to Interactions Between Microwave-Dressed Rydberg Atoms [PDF]
, 2012 Atom-atom interactions within a small volume were investigated through the excitation of ultracold Rb atoms. The application of microwaves enhances these interactions, causing the suppression of Rydberg state excitation. The suppression of Rydberg atom excitation was both qualitatively observed and quantitatively analyzed using a universal scaling law,
arxiv +1 more source
Ionization Potential of the Helium Atom [PDF]
Phys. Rev. Lett. 87, 193003 (2001), 2001 Ground state ionization potential of the He^4 atom is evaluated to be 5 945 204 221 (42) MHz. Along with lower order contributions, this result includes all effects of the relative orders alpha^4, alpha^3*m_e/m_alpha and alpha^5*ln^2(alpha).
arxiv +1 more source
Many-electron tunneling in atoms [PDF]
, 1999 A theoretical derivation is given for the formula describing N-electron ionization of atom by a dc field and laser radiation in tunneling regime. Numerical examples are presented for noble gases atoms.
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Effective potentials for atom-atom interaction at low temperatures [PDF]
, 2002 We discuss the concept and design of effective atom-atom potentials that accurately describe any physical processes involving only states around the threshold. The existence of such potentials gives hope to a quantitative, and systematic, understanding of quantum few-atom and quantum many-atom systems at relatively low temperatures.
arxiv +1 more source
Modification of Coulomb law and energy levels of hydrogen atom in superstrong magnetic field [PDF]
, 2011 The screening of a Coulomb potential by superstrong magnetic field is studied. Its influence on the spectrum of a hydrogen atom is determined.
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A semiclassical theory of the chemical potential for the Atomic Elements [PDF]
arXiv, 2020 The chemical potiential for the ground states of the atomic elements have been calculated within the semiclassical approximation The present work closely follows Schwinger and Englert's semiclassical treatment of atomic structure.
arxiv
Long-range interactions of lithium atoms [PDF]
Phys. Rev. A 55 (1997), 2882, 1996 The long-range interactions of two atoms, of an atom and a dielectric wall, of an atom and a perfectly conducting wall, and of an atom between two perfectly conducting walls are calculated, including the effects of retardation, for Li using dynamic polarizabilities determined from highly correlated, variationally determined wave functions.
arxiv +1 more source