# IR Inflation from Multiple Branes

@article{Thomas2007IRIF, title={IR Inflation from Multiple Branes}, author={Steven A. Thomas and John Ward}, journal={Physical Review D}, year={2007}, volume={76}, pages={023509} }

In this paper we examine the IR inflation scenario using the DBI action, where we have N multiple branes located near the tip of a warped geometry. At large N the solutions are similar in form to the more traditional single brane models, however we find that it is difficult to simultaneously satisfy the WMAP bounds on the scalar amplitude and the scalar spectral index. We go on to examine two new solutions where N = 2 and N = 3 respectively, which both have highly non-linear actions. The sound…

## 42 Citations

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We investigate DBI inflation using N multiple branes and show how the configuration is equivalent to a single wrapped D5-brane with flux. We then show how 1/N corrections can be implemented, and we…

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- 2007

: We investigate DBI inﬂation using N multiple branes and show how the conﬁguration is equivalent to a single wrapped D 5-brane with ﬂux. We then show how 1 /N corrections can be implemented, and we…

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In cascade inflation and some other string inflation models, collisions of mobile branes with other branes or orbifold planes occur and lead to interesting cosmological signatures. The fundamental…

### Energy transfer in multi field inflation and cosmological perturbations

- Physics
- 2009

In cascade inflation and some other string inflation models, collisions of mobile branes with other branes or orbifold planes occur and lead to interesting cosmological signatures. The fundamental…

### Fields Annihilation and Particles Creation in DBI inflation

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- 2011

We consider a model of DBI inflation where two stacks of mobile branes are moving ultra relativistically in a warped throat. The stack closer to the tip of the throat is annihilated with the…

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