Holographic multiverse and conformal invariance

Abstract

We consider a holographic description of the inflationary multiverse, according to which the wave function of the universe is interpreted as the generating functional for a lower dimensional Euclidean theory. We analyze a simple model where transitions between inflationary vacua occur through bubble nucleation, and the inflating part of spacetime consists of de Sitter regions separated by thin bubble walls. In this model, we present some evidence that the dual theory is conformally invariant in the UV.

Discussions and references added

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• Holographic inflation and the conservation of $\zeta$
• Out of equilibrium: understanding cosmological evolution to lower-entropy states
• On the Topological Phases of Eternal Inflation
• Measures for a Transdimensional Multiverse
• Consistency relations and conservation of $\zeta$ in holographic inflation
• Tensor modes on the string theory landscape
• Phenomenology of the CAH+ measure
• Dynamical systems of eternal inflation: A possible solution to the problems of entropy, measure, observables and initial conditions
• Defect CFTs and holographic multiverse
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• Exploring a simple sector of the Einstein-Maxwell landscape
• Multiverse rate equation including bubble collisions
• Effects of high-order operators in non-relativistic Lifshitz holography