# Late-time dynamics of brane gas cosmology

@article{Campos2003LatetimeDO, title={Late-time dynamics of brane gas cosmology}, author={Antonio Campos}, journal={Physical Review D}, year={2003}, volume={68}, pages={104017} }

Brane gas cosmology is a scenario inspired by string theory which proposes a simple resolution to the initial singularity problem and gives a dynamical explanation for the number of spatial dimensions of our universe. In this work we have studied analytically and numerically the late-time behaviour of these type of cosmologies taking a proper care of the annihilation of winding modes. This has help us to clarify and extend several aspects of their dynamics. We have found that the decay of…

## 34 Citations

The cosmology of massless string modes

- Physics
- 2006

We consider the spacetime dynamics of a gas of closed strings in the context of general relativity in a background of arbitrary spatial dimensions. Our motivation is primarily late time string gas…

The effect of α′ corrections in string gas cosmology

- Physics
- 2006

In the Brandenberger–Vafa scenario of string gas cosmology, the Universe starts as a small torus of string length dimension filled with a hot gas of strings. In such extreme conditions, in addition…

Dynamical decompactification from brane gases in eleven-dimensional supergravity

- Physics
- 2005

Brane gas cosmology provides a dynamical decompactification mechanism that could account for the number of spacetime dimensions we observe today. In this work we discuss this scenario taking into…

Moduli Stabilization in String Gas Cosmology

- Physics
- 2005

String gas cosmology is an approach towards studying the effects of superstring theory on early universe cosmology which is based on new symmetries and new degrees of freedom of string theory. Within…

Late cosmology of brane gases with a two form field

- Physics
- 2004

We consider the effects of a two-form field on the late-time dynamics of brane gas cosmologies. Assuming thermal equilibrium of winding states, we find that the presence of a form field allows a late…

Enhanced symmetries, duality invariance and moduli stabilization in string gas cosmology

- Physics
- 2008

This manusript based thesis explores the consequences of string gas cosmology for the moduli problem in string theory. We compile three published papers which set up the formalism and technique of…

String gas cosmology

- Physics
- 2006

A critical review and summary of string gas cosmology is presented. A pedagogical derivation of the effective action starting from string theory, emphasizing the necessary approximations that must be…

String Windings in the Early Universe

- Physics
- 2005

We study string dynamics in the early universe. Our motivation is the proposal of Brandenberger and Vafa that string winding modes may play a key role in decompactifying three spatial dimensions. We…

Stabilization of the extra dimensions in brane gas cosmology with bulk flux

- Physics
- 2007

Abstract We consider the anisotropic evolution of spatial dimensions and the stabilization of internal dimensions in the framework of brane gas cosmology. We observe that the bulk RR field can give…

More on the spectrum of perturbations in string gas cosmology

- Physics
- 2006

String gas cosmology is rewritten in the Einstein frame. In an effective theory in which a gas of closed strings is coupled to a dilaton gravity background without any potential for the dilaton, the…

## References

SHOWING 1-10 OF 32 REFERENCES

Brane gas cosmology in M theory: Late time behavior

- Physics
- 2003

We investigate the late-time behavior of a universe containing a supergravity gas and wrapped 2-branes in the context of M theory compactified on ${T}^{10}.$ The supergravity gas tends to drive…

Loitering phase in brane gas cosmology

- Physics
- 2002

Abstract Brane gas cosmology (BGC) is an approach to M-theory cosmology in which the initial state of the Universe is taken to be small, dense and hot, with all fundamental degrees of freedom near…

D-branes and cosmology

- Physics
- 1999

Abstract D-branes, topological defects in string theory on which string endpoints can live, may give new insight into the understanding of the cosmological evolution of the Universe at early epochs.…

Aspects of string-gas cosmology at finite temperature

- Physics
- 2003

We study string-gas cosmology in dilaton gravity, inspired by the fact that it naturally arises in a string theory context. Our main interest is the thermodynamical treatment of the string-gas and…

Brane gases in the early Universe

- Physics
- 2000

Over the past decade it has become clear that fundamental strings are not the only fundamental degrees of freedom in string theory. D-branes are also part of the spectrum of fundamental states. In…

Construction of nonsingular cosmological solutions in string theories

- Physics
- 2003

We study nonsingular cosmological scenarios in a general D-dimensional string effective action of the dilaton–modulus–axion system in the presence of the matter source. In the standard dilatonic…

Numerical experiments on string cosmology

- Physics
- 1996

Abstract We investigate some classical aspects of fundamental strings via numerical experiments. In particular, we study the thermodynamics of a string network within a toroidal universe, as a…

Isotropization in Brane Gas Cosmology

- Physics
- 2003

Brane Gas Cosmology (BGC) is an approach to unifying string theory and cosmology in which matter is described by a gas of strings and branes in a dilaton gravity background. The Universe is assumed…

Elements of string cosmology

- Physics
- 1992

Abstract Aspects of string cosmology for critical and non-critical strings are discussed emphasizing the necessity to account for the dilaton dynamics for a proper incorporation of “large-small”…

Cosmological String Gas on Orbifolds

- Physics
- 2002

It has long been known that strings wound around incontractible cycles can play a vital role in cosmology. In particular, in a spacetime with toroidal spatial hypersurfaces, the dynamics of the…