  Generalized dilaton gravity in 2d is the most general consistent deformation
of the Jackiw-Teitelboim model that maintains local Lorentz invariance. The
action is generically not power-counting renormalizable, thus going beyond the
class of models typically studied. Nevertheless, all these models are exactly
soluble. We focus on a subclass of dilaton scale invariant models. Within this
subclass, we identify a 3-parameter family of models that describe black holes
asymptoting to AdS2 in the UV and to dS2 in the IR. Since these models could be
interesting for holography, we address thermodynamics and boundary issues,
including boundary charges, asymptotic symmetries and holographic
renormalization.
