  The discovery of the Higgs boson is one of the greatest discoveries in this
century. The standard model is finally complete. Apart from its significance in
particle physics, this discovery has profound implications for gravity and
cosmology in particular. Many perturbative quantum gravity interactions
involving scalars are not suppressed by powers of Planck mass. Since gravity
couples anything with mass to anything with mass, then Higgs must be strongly
coupled to any other fundamental scalar in nature, even if the gauge couplings
are absent in the original Lagrangian. Since the LHC data indicate that the
Higgs is very much standard model-like, there is very little room for
non-standard model processes, e.g. invisible decays. This severely complicates
any model that involves light enough scalar that the Higgs can kinematically
decay to. Most notably, these are the quintessence models, models including
light axions, and light scalar dark matter models.
