# Observing brane inflation

@article{Shandera2006ObservingBI, title={Observing brane inflation}, author={Sarah Shandera and S-H Henry Tye}, journal={Journal of Cosmology and Astroparticle Physics}, year={2006}, volume={2006}, pages={007 - 007} }

Linking the slow-roll scenario and the Dirac–Born–Infeld scenario of ultra-relativistic roll (where, thanks to the warp factor, the inflaton moves slowly even with an ultra-relativistic Lorentz factor), we find that the KKLMMT D3–-brane inflation is robust; that is, enough e-folds of inflation is quite generic in the parameter space of the model. We show that the intermediate regime of relativistic roll can be quite interesting observationally. Introducing appropriate inflationary parameters…

## 125 Citations

### Cosmology of the tachyon in brane inflation

- Physics
- 2006

In certain implementations of the brane inflationary paradigm, the exit from inflation occurs when the branes annihilate through tachyon condensation. We investigate various cosmological effects…

### Cosmology of the Tachyon in Brane Inflation

- Physics
- 2006

In certain implementations of the brane inflationary paradigm, the exit from inflation occurs when the branes annihilate through tachyon condensation. We investigate various cosmological effects…

### Comparing brane inflation to WMAP

- Physics
- 2007

We compare the simplest realistic brane inflationary model to recent cosmological data, including Wilkinson Microwave Anisotropy Probe (WMAP) three-year cosmic microwave background (CMB) results,…

### Comparing infrared Dirac-Born-Infeld brane inflation to observations

- Physics
- 2008

We compare the infrared Dirac-Born-Infeld brane inflation model to observations using a Bayesian analysis. The current data cannot distinguish it from the $\ensuremath{\Lambda}\mathrm{CDM}$ model but…

### On the slow roll expansion for brane inflation

- Biology
- 2007

This note investigates the applicability of the slow roll approximation in inflationary models of this type and derives a slow roll expansion of Liddle, Parsons and Barrow for the case of the DBI action.

### A Microscopic Limit on Gravitational Waves from D-brane Inflation

- Economics
- 2007

We derive a microscopic bound on the maximal field variation of the inflaton during warped D-brane inflation. By a result of Lyth, this implies an upper limit on the amount of gravitational waves…

### Inflation from wrapped branes

- Physics
- 2007

We show that the use of higher dimensional wrapped branes can significantly extend the inflaton field range compared to brane inflation models which use $D3$-branes. We construct a simple…

### Gravitational wave constraints on Dirac–Born–Infeld inflation

- Physics
- 2007

An upper bound on the amplitude of the primordial gravitational wave spectrum generated during ultra-violet Dirac–Born–Infeld (DBI) inflation is derived. The bound is insensitive to the form of the…

### Constraining Inflationary Scenarios with Braneworld Models and Second Order Cosmological Perturbations

- Physics
- 2010

Inflationary cosmology is the leading explanation of the very early universe. Many different models of inflation have been constructed which fit current observational data. In this work theoretical…

### Dirac–Born–Infeld inflation using a one-parameter family of throat geometries

- Physics
- 2007

We demonstrate the possibility of examining cosmological signatures in the Dirac–Born–Infeld (DBI) inflation setup using the BGMPZ solution, a one-parameter family of geometries for the warped throat…

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