#cosmological expansion

topiccosmological expansion

2 papers · 1 filter

astro-ph.CO2026

Domain walls through different cosmologies

I. Dankovsky, D. Gorbunov, S. Ramazanov +1

The paper uses lattice simulations to study how domain wall networks evolve under various early‑universe expansion histories, showing that the particle horizon largely determines w…

gr-qc2026

Nonlinear Gravitational Wave Interactions in an Expanding Universe

Fan Zhang, Lee Lindblom, Zhi-Peng Peng

The paper numerically investigates how gravitational waves interact nonlinearly in an expanding universe, revealing energy cascades toward longer and shorter wavelengths that follo…