On the chaos of D-brane phase transitions

TL;DR

This paper investigates the chaotic nature of D-brane phase transitions in cosmological models, revealing that these transitions are typically non-smooth and cause fluctuations in the gauge group over time.

Contribution

It provides an explicit analysis of the cosmological dynamics during D-brane phase transitions, highlighting their chaotic behavior and implications for early universe cosmology.

Findings

Transitions are chaotic and non-smooth

Gauge groups fluctuate during transitions

Implications for inflationary models

Abstract

We study small instanton (and brane recombination) phase transitions in phenomenological models built with D-branes. By explicitly describing the cosmological dynamics of the moduli and matter fields, we show that these transitions do not occur smoothly, but are typically chaotic with the gauge group of the low energy theory fluctuating in time. We comment on the potential implications for cosmological questions such as inflation.