VSEPR theory provides a practical way to predict the 3D shapes of molecules by focusing on how electron pairs repel each other. This model explains why atoms arrange in specific geometries, from ...

For years, one tiny mismatch in particle physics carried outsized hopes. The muon, a heavier and short-lived cousin of the ...

A new study published in Nature Physics introduces a theory of electron-phonon coupling that is affected by the quantum geometry of the electronic wavefunctions. The movement of electrons in a lattice ...

Cycloaddition reactions represent a cornerstone of synthetic organic chemistry, facilitating the formation of cyclic structures through concerted pericyclic processes. Traditionally explained via ...

A pulse of light sets the tempo in the material. Atoms in a crystalline sheet just a few atoms thick begin to move—not randomly, but in a coordinated rhythm, twisting and untwisting in sync like ...

A new analysis reveals what happens when very short or narrow electron beams encounter a particle. The research is published in the New Journal of Physics. Scientists should be able to achieve a new ...

Plasma forms in gaps ten times smaller than classical theory predicts possible, driven by electron cascades on the substrate ...

Résumé of the many-electron problem -- The occupation number representation (second quantization) -- The Hartree-Fock method and the free-electron gas -- Plasma oscillations in a free-electron gas -- ...