Remarks on Fundamental String Cosmology

TL;DR

This paper discusses how velocity-dependent forces between strings or branes can cause universe acceleration and structure formation without a cosmological constant, expanding understanding of string cosmology.

Contribution

It demonstrates that repulsive velocity-dependent forces are more general and can lead to cosmic acceleration and structure formation beyond specific models.

Findings

Velocity-dependent forces cause universe acceleration.

Such forces are more broadly applicable than previously thought.

They can lead to cosmic structure formation.

Abstract

In recent work, it was shown that velocity-dependent forces between moving strings or branes lead to an accelerating expanding universe without assuming the existence of a cosmological constant. Here we show that the repulsive velocity-dependent force arises in more general contexts and can lead to cosmic structure formation.