# A smooth exit from eternal inflation?

@article{Hawking2017ASE,
title={A smooth exit from eternal inflation?},
author={Stephen William Hawking and Thomas Hertog},
journal={Journal of High Energy Physics},
year={2017},
volume={2018},
pages={1-14}
}
• Published 24 July 2017
• Mathematics
• Journal of High Energy Physics
A bstractThe usual theory of inflation breaks down in eternal inflation. We derive a dual description of eternal inflation in terms of a deformed Euclidean CFT located at the threshold of eternal inflation. The partition function gives the amplitude of different geometries of the threshold surface in the no-boundary state. Its local and global behavior in dual toy models shows that the amplitude is low for surfaces which are not nearly conformal to the round three-sphere and essentially zero…

### Conditions for (no) eternal inflation

• Tom Rudelius
• Economics
Journal of Cosmology and Astroparticle Physics
• 2019
We construct analytic and numerical solutions of the Fokker-Planck equation that arises in the context of stochastic inflation. We use these solutions to derive necessary conditions for eternal

### New perspectives on constant-roll inflation

• Economics
• 2017
We study constant-roll inflation using the β-function formalism. We show that the constant rate of the inflaton roll is translated into a first order differential equation for the β-function which

### Supersymmetric dS/CFT

• Physics
• 2017
A bstractWe put forward new explicit realisations of dS/CFT that relate N$$\mathcal{N}$$ = 2 supersymmetric Euclidean vector models with reversed spin-statistics in three dimensions to specific

### Identifying universality in warm inflation

• Economics
Journal of Cosmology and Astroparticle Physics
• 2018
Ideas borrowed from renormalization group are applied to warm inflation to characterize the inflationary epoch in terms of flows away from the de Sitter regime. In this framework different models of

### Rejuvenating the hope of a swampland consistent inflated multiverse with tachyonic inflation in the high energy RS-II Braneworld

The swampland conjectures from string theory have had some really interesting implications on cosmology, in particular on inflationary models. Some models of inflation have been shown to be

### Squashed holography with scalar condensates

• Physics, Mathematics
Journal of High Energy Physics
• 2018
A bstractWe evaluate the partition function of the free and interacting O(N) vector model on a two-parameter family of squashed three spheres in the presence of a scalar deformation. We also find

### What is the no-boundary wave function of the Universe?

• Physics, Mathematics
Physical Review D
• 2019
We specify the semiclassical no-boundary wave function of the universe without relying on a functional integral of any kind. The wave function is given as a sum of specific saddle points of the

### CPT Symmetry in Two-Fold de Sitter Universe

• Physics
Symmetry
• 2021
This work shows CPT symmetry derives from the nucleation of particles that divides the hypersphere in two mirror universes and defines big bang as a bifurcation point, as the creation of a de Sitter universe or a pair of entangled universes from “nothing”.

### The Wave Function of The Universe

The wave function of the Universe is a solution to the Wheeler-DeWitt equation. As this equation permits infinitely many solutions, selecting the one that corresponds to our Universe requires that we

### Spinors in supersymmetric dS/CFT

• Physics
Journal of High Energy Physics
• 2019
Abstract We study fermionic bulk fields in the dS/CFT dualities relating $$\mathcal{N}$$ N = 2 su- persymmetric Euclidean vector models with reversed spin-statistics in three

## References

SHOWING 1-10 OF 50 REFERENCES

### The phase transition to eternal inflation

• Economics
• 2008
For slow-roll inflation we study the phase transition to the eternal regime. Starting from a finite inflationary volume, we consider the volume of the universe at reheating as order parameter. We

### The Phase Transition to Slow-roll Eternal Inflation

• Economics
• 2008
For slow-roll inflation we study the phase transition to the eternal regime. Starting from a finite inflationary volume, we consider the volume of the universe at reheating as order parameter. We

### Holographic no-boundary measure

• Mathematics
• 2012
A bstractWe show that the complex saddle points of the no-boundary wave function with a positive cosmological constant and a positive scalar potential have a representation in which the geometry

### Holography for inflation using conformal perturbation theory

• Mathematics
• 2013
A bstractWe provide a precise and quantitative holographic description of a class of inflationary slow-roll models. The dual QFT is a deformation of a three-dimensional CFT by a nearly marginal

### No-boundary measure in the regime of eternal inflation

• Physics
• 2010
The no-boundary wave function (NBWF) specifies a measure for prediction in cosmology that selects inflationary histories and remains well behaved for spatially large or infinite universes. This paper

### The NUTs and Bolts of squashed holography

• Physics
• 2016
A bstractWe evaluate the partition function of the free O(N ) model on a two-parameter family of squashed three spheres. We also find new solutions of general relativity with negative cosmological

### Eternal Inflation

• A. Guth
• Economics
Annals of the New York Academy of Sciences
• 2001
Abstract: The basic workings of inflationary models are summarized, along with the arguments that strongly suggest that our universe is the product of inflation. It is argued that essentially all

### Multi-field inflation from holography

• Physics
• 2014
We initiate the study of multi-field inflation using holography. Bulk light scalar fields correspond to nearly marginal operators in the boundary theory and the dual quantum field theory is a

### Non-Gaussian features of primordial fluctuations in single field inflationary models

We compute the three point correlation functions for primordial scalar and tensor fluctuations in single field inflationary models. We obtain explicit expressions in the slow roll limit where the