Journal ArticleDOI
Long‐Range Casimir Forces: Theory and Recent Experiments on Atomic Systems
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TLDR
In this article, high-L Rydberg States of Helium have been used to model the long-range Casimir interactions of two-electron atoms in Perturbation Theory.Abstract:
An Overview of LongRange Casimir Interactions L. Spruch. Experimental Studies of High-L Rydberg States in Helium S.R. Lundeen. High Precision Calculations for the Rydberg States of Helium G.W.F. Drake. High Rydberg States of Two-Electron Atoms in Perturbation Theory R.J. Drachman. Long-Range Electromagnetic Forces in Quantum Theory J. Sucher, G. Feinberg. Index.read more
Citations
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Journal ArticleDOI
New developments in the Casimir effect
TL;DR: In this paper, the authors provide a review of both new experimental and theoretical developments in the Casimir effect, and provide the most recent constraints on the corrections to Newtonian gravitational law and other hypothetical long-range interactions at submillimeter range.
Journal ArticleDOI
How exactly did the universe become neutral
TL;DR: In this article, the authors presented a treatment of H, He I, and He II recombination in the early universe, using multilevel atoms and evolving the population of each level with redshift by including all bound-bound and bound-free transitions.
Journal ArticleDOI
How exactly did the Universe become neutral
TL;DR: In this article, a refined treatment of H, He I, and He II recombination in the early universe is presented, which allows excited atomic level populations to depart from an equilibrium distribution, replacing the total recombination coefficient with recombination to and photoionization from each level directly at each redshift step.
Journal ArticleDOI
Helium dimer potential from symmetry-adapted perturbation theory calculations using large Gaussian geminal and orbital basis sets
TL;DR: In this article, the symmetry-adapted perturbation theory (SAPT) has been employed to calculate an accurate potential energy curve for the helium dimer, and the most accurate values of the electrostatic, exchange, induction, and dispersion energies are reported for distances from 3.0 to 7.0 bohr.
Journal ArticleDOI
The theory of two-electron atoms: between ground state and complete fragmentation
TL;DR: A review of the evolution of the understanding of correlated two-electron dynamics and its importance for doubly excited resonance states is presented in this article, with an emphasis on the concepts introduced.
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