The cosmological evolution of p-brane networks

Details The cosmological evolution of p-brane networks The cosmological evolution of p-brane networks

2011-07-22

arxiv.org/abs/1107.4582v1

Phys.Rev.D84:063502,2011

Physics

High Energy Physics

High Energy Physics - Theory

6 pages

Scientific paper

10.1103/PhysRevD.84.063502

In this paper we derive, directly from the Nambu-Goto action, the relevant components of the acceleration of cosmological featureless $p$-branes, extending previous analysis based on the field theory equations in the thin-brane limit. The component of the acceleration parallel to the velocity is at the core of the velocity-dependent one-scale model for the evolution of $p$-brane networks. We use this model to show that, in a decelerating expanding universe in which the $p$-branes are relevant cosmologically, interactions cannot lead to frustration, except for fine-tuned non-relativistic networks with a dimensionless curvature parameter $k \ll 1$. We discuss the implications of our findings for the cosmological evolution of $p$-brane networks.

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