Speaker
Description
This talk examines scalar field cosmologies driven by a generalized harmonic potential, focusing on Locally Rotationally Symmetric (LRS) Bianchi I, III, and V spacetimes, as well as their isotropic limits.
We begin by reviewing the averaged dynamics of Bianchi I and III models, which offer accessible examples of anisotropic cosmologies. Building on this foundation, we present new results for the Bianchi V case, where the geometry introduces additional complexity.
A central idea is that the Hubble parameter acts as a time-dependent perturbation. As it decreases, the discrepancy between full-system solutions and their time-averaged counterparts becomes negligible. That means that oscillatory features in the system can be smoothed out, allowing us to recover the same long-term behaviour with a simpler, averaged description.
This averaging approach provides both conceptual clarity and practical simplification, making it a valuable tool for studying scalar field dynamics in anisotropic cosmological settings.
