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A reported helium experiment produced a weak, high-energy X-ray plateau beyond the usual single-electron cutoff, pointing to a way to probe correlated electrons on attosecond timescales.
Samuel Poncé and Xavier Gonze clarify how electron–phonon effects enter calculated total energies, reporting leading corrections of 3.8 meV per atom in diamond and 9.7 meV per atom in GaN.
UC San Diego engineers used a reshaped ultrafast laser to switch magnetism in a nine-layer structure, easing two research limits while leaving chip integration and practical speed unresolved.
ScienceDaily reports a theory for a highly excited yet ordered state in a one-dimensional quantum gas; the claimed experimental realization is a separate study still under peer review.