Remarks on Fundamental String Cosmology
Ramzi R. Khuri

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.
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