Dark energy may not be completely dark -- it may harbor couplings to the Standard Model or dark matter that for one reason or another have eluded our grasp. Yet, if the Standard Model itself is a guide, then no couplings are superfluous: anything not prohibited is mandatory. So we may ask whether the allowed couplings of dark energy are essential to its behavior as the universal accelerant. A number of our projects (Bielefeld, Caldwell & Linder 2014, Caldwell, Gluscevic & Kamionkowski 2011) aim at this question.
FACULTY CONTACT: Robert Caldwell