# New old inflation

@article{Dvali2003NewOI, title={New old inflation}, author={Gia Dvali and Shamit Kachru}, journal={arXiv: High Energy Physics - Theory}, year={2003}, pages={1131-1155} }

We propose a new class of inflationary solutions to the standard cosmological problems (horizon, flatness, monopole,...), based on a modification of old inflation. These models do not require a potential which satisfies the normal inflationary slow-roll conditions. Our universe arises from a single tunneling event as the inflaton leaves the false vacuum. Subsequent dynamics (arising from either the oscillations of the inflaton field or thermal effects) keep a second field trapped in a false…

## 59 Citations

Large Scale Power and Running Spectral Index in New Old Inflation

- Physics
- 2003

We have proposed a new class of inflationary scenarios in which the first stage of expansion is driven by ''old'' false vacuum inflation. This ends by nucleation of a bubble, which then further…

Old inflation in string theory

- Physics
- 2004

We propose a stringy version of the old inflation scenario which does not require any slow-roll inflaton potential and is based on a specific example of string compactification with warped metric.…

Elliptic inflation: generating the curvature perturbation without slow-roll

- Economics
- 2006

There are many inflationary models in which the inflaton field does not satisfy the slow-roll condition. However, in such models, it is always difficult to generate the curvature perturbation during…

A Measure of de Sitter entropy and eternal inflation

- Physics
- 2007

We show that in any model of non-eternal inflation satisfying the null energy condition, the area of the de Sitter horizon increases by at least one Planck unit in each inflationary e-folding. This…

Multibrane inflation and dynamical flattening of the inflaton potential

- Mathematics
- 2005

We investigate the problem of fine tuning of the potential in the KKLMMT warped flux compactification scenario for brane-antibrane inflation in Type IIB string theory. We argue for the importance of…

Low scale inflation and the curvaton mechanism

- Physics, Economics
- 2005

The primordial curvature perturbation may be due to a `curvaton' field, which dominates (or almost dominates) the energy density before it decays. In the simplest version of the curvaton model the…

McGill-04 / 04 Inflation in Realistic D-Brane Models

- Physics
- 2004

We find successful models of D-brane/anti-brane inflation within a string context. We work within the GKP-IKLT class of type IIB string vacua for which many moduli are stabilized through fluxes, as…

Inflation in realistic D-brane models

- Physics
- 2004

We find successful models of D-brane/anti-brane inflation within a string context. We work within the GKP-LT class of type IIB string vacua for which many moduli are stabilized through fluxes, as…

Curvature perturbation spectrum from false vacuum inflation

- Physics
- 2009

In the inflationary cosmology it occurs frequently that the inflaton field is trapped in a local, transient minimum with non‐zero vacuum energy. The difficulty regarding the curvature perturbation…

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