4 papers · 1 filter
Evolution of Generic Varying-Tension Cosmic Strings in Expanding Spacetimes
Hubert Lau Sze Chun, Joseph Conlon
It has recently been realised that strings with time-dependent tensions exhibit interesting dynamics; in particular, when the tension decreases loops of string can grow and possibl…
Self-Tracking Solutions for Asymptotic Scalar Fields
Martin Mosny, Joseph P. Conlon, Edmund J. Copeland
We explore the dynamics of pure scalar fields rolling on an exponential potential in the absence of any additional background fluid and demonstrate the existence of self-tracking s…
A Note on 4d Kination and Higher-Dimensional Uplifts
Fien Apers, Joseph P. Conlon, Martin Mosny
This note expands on the details of the relationship between 4d kination solutions in string cosmology and Kasner solutions of 10d general relativity. It extends previous analyses…
String Theory and the First Half of the Universe
Fien Apers, Joseph P. Conlon, Edmund J. Copeland +2
We perform a detailed study of stringy moduli-driven cosmologies between the end of inflation and the commencement of the Hot Big Bang, including both the background and cosmologic…