Erratum: Dileptonic-helium ground-state energy

Some Relations for the Ground State Energy and Helium Diatomic Molecules

It is shown quite generally that the ground state energy of two atoms in infinite space, interacting via a spherical potential that depends only on the distance between particles, is the lowest in two dimensions. Using variational procedure, binding energies of helium diatomic molecules, in infinite and restricted spaces, are obtained as well. The results derived for helium atoms are in accord ...

XUV frequency-comb metrology on the ground state of helium

The operation of a frequency comb at extreme ultraviolet (xuv) wavelengths based on pairwise amplification and nonlinear upconversion to the 15th harmonic of pulses from a frequency-comb laser in the near-infrared range is reported. It is experimentally demonstrated that the resulting spectrum at 51 nm is fully phase coherent and can be applied to precision metrology. The pulses are used in a s...

Ground State Hyperfine Structure of Muonic Helium Atom

The muonic helium atom (μe2He) represents the simple three-body atomic system. The interaction between magnetic moments of the muon and electron leads to the hyperfine structure (HFS) of the energy levels. The investigation of the energy spectrum of this atom is important for the check of quantum electrodynamics for three-particle bound state. The ground state hyperfine splitting was measured m...

Erratum: Ground state potential energy surfaces around selected atoms from resonant inelastic x-ray scattering

This corrects the article DOI: 10.1038/srep20054.

ERRATUM: Solving Quantum Ground-State Problems with Nuclear Magnetic Resonance