Cosmology from confinement?

We describe a class of holographic models that may the physics certain four-dimensional big-bang / big-crunch cosmologies. The construction involves pair 3D Euclidean CFTs each on homogeneous and isotropic space $M$ coupled at either end an interval ${\cal I}$ to 4D CFT $M \times {\cal with many fewer local degrees freedom. argue in some cases, when size is much greater than length I}$, theory flows gapped confining three-dimensional field infrared, this reflected dual description by asymptotically AdS spacetimes two joining up IR give wormhole. can be reinterpreted as generating state Lorentzian {\rm time}$ whose includes cosmology. When $\mathbb{R}^3$, we alternatively analytically continue one $\mathbb{R}^3$ directions get eternally traversable planar suggest explicit microscopic examples where N}=4$ SYM are superconformal theories opposite orientation. In case, geometries SCFTs understood geometrical version brane-antibrane pair, tendency connect related standard instability systems.