# 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} }

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…

## 42 Citations

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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

- EconomicsAnnals 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

- Mathematics
- 2003

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…