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Quantum-chemical definition of the atomic valence in molecules and crystals

A new quantum-chemical definition is given of the full atomic valence taking into account both the covalent and ionic parts of the chemical bonds formed by an atom in molecules and crystals. Full valence is close to formal ("classical") valence of an atom in a wide row of compounds. The theoretical consideration and the CNDO calculations of molecules and crystals are made to justify the validity o

Scalar sector of two-Higgs-doublet models : A minireview

A vast literature on the theory and phenomenology of two-Higgs-doublet models (2HDM) exists since long. However, the present situation demands a revisit of some 2HDM properties. Now that a 125 GeV scalar resonance has been discovered at the LHC, with its couplings to other particles showing increasing affinity to the Standard Model Higgs-like behaviour, the 2HDM parameter space is more squeezed th

AB 04 : en kommentar

En kommentar till det mest använda standardavtalet för den svenska entreprenadsektorn.

Effective theories of flavor and the nonuniversal MSSM

Flavor symmetries à la Froggatt-Nielsen provide a compelling way to explain the hierarchies of fermionic masses and mixing angles in the Yukawa sector. In supersymmetric (SUSY) extensions of the Standard Model where the mediation of SUSY breaking occurs at scales larger than the breaking of flavor, this symmetry must be respected not only by the Yukawas of the superpotential but also by the soft-b