A Holographic Framework for Eternal Inflation

TL;DR

This paper proposes a holographic duality between bubble nucleation in an eternally inflating universe and a 2D conformal field theory, offering a new perspective on cosmological evolution and the multiverse.

Contribution

It introduces a novel holographic framework linking bubble nucleation in eternal inflation to a boundary CFT, extending holography beyond pure de Sitter space.

Findings

Evidence for a holographic duality involving bubble nucleation

A new holographic description combining Wheeler-DeWitt formalism with boundary CFT

Implications for understanding the multiverse and the landscape

Abstract

In this paper we provide some circumstantial evidence for a holographic duality between bubble nucleation in an eternally inflating universe and a Euclidean conformal field theory. The holographic correspondence (which is different than Strominger's dS/CFT duality) relates the decay of (3+1)-dimensional de Sitter space to a two-dimensional CFT. It is not associated with pure de Sitter space, but rather with Coleman-De Luccia bubble nucleation. Alternatively, it can be thought of as a holographic description of the open, infinite, FRW cosmology that results from such a bubble. The conjectured holographic representation is of a new type that combines holography with the Wheeler-DeWitt formalism to produce a Wheeler-DeWitt theory that lives on the spatial boundary of a k=-1 FRW cosmology. We also argue for a more ambitious interpretation of the Wheeler-DeWitt CFT as a holographic dual of the entire Landscape.