  We study the construction of holographic models with closed FRW cosmologies
on the worldvolume of a constant-tension brane inside a Schwarzschild-AdS black
hole. In dimensions d>2, having a smooth Euclidean solution where the brane
does not self-intersect limits the brane tension to T<T_*, preventing us from
realising a separation of scales between the brane and bulk curvature scales.
We show that adding interface branes to this model does not relax the condition
on the brane tension.

High Energy Physics - Theory