A Review on the Cosmology of the de Sitter Horndeski Models

We review the most general scalar-tensor cosmological models with up to second-order derivatives in the field equations that have a fixed spatially flat de Sitter critical point independent of the material content or vacuum energy. This subclass of the Horndeski Lagrangian is capable of dynamically adjusting any value of the vacuum energy of the matter fields at the critical point. We present the cosmological evolution of the linear models and the non-linear models with shift symmetry. We come to the conclusion that the shift symmetric non-linear models can deliver a viable background compatible with current observations.Comment: 7 pages, 2 figures. Proceedings accepted for publication in "Universe", Special Issue "Varying Constants and Fundamental Cosmology" for the VARCOSMOFUN16 in Szczecin, Poland, 12-17 September, 201

Slotting Allowance: an Overlooked Angle in Grocery Retailing

Ever wonder why one product brand enjoys a more prominent shelf location in a particular retail establishment than another brand? Would such arrangement have any impact on the price one pays for a particular product? Answers to these are related to the relatively unexplored business phenomenon known as slotting allowances or fees for store shelf space. Read more about it...slotting allowance, retail market, distribution market, intermediate market, shelf space rental fee, product brand, store shelf space