Dark Energy and CMB
  The American Physical Society's Division of Particles and Fields initiated a
long-term planning exercise over 2012-13, with the goal of developing the
community's long term aspirations. The sub-group "Dark Energy and CMB" prepared
a series of papers explaining and highlighting the physics that will be studied
with large galaxy surveys and cosmic microwave background experiments. This
paper summarizes the findings of the other papers, all of which have been
submitted jointly to the arXiv.
