Janus within Janus

الأصل · EN

We found a simple and interesting generalization of the non-supersymmetric Janus solution in type IIB string theory. The Janus solution can be thought of as a thick AdSd-sliced domain wall in AdSd₊₁ space. It turns out that the AdSd-sliced domain wall can support its own AdSd₋₁-sliced domain wall within it. Indeed this pattern persists further until it reaches the AdS₂-slice of the domain wall within self-similar AdSₚ ₍₂<ₚ≤ d₎-sliced domain walls. In other words the solution represents a sequence of little Janus nested in the interface of the parent Janus according to a remarkably simple ``nesting'' rule. Via the AdS/CFT duality, the dual gauge theory description is in general an interface CFT of higher codimensions.