Quantum Big Bounce and Finite Universe Models: Structure Formation, Singularities, and Fundamental Interactions in Early Cosmology

This collection of articles presents a detailed exploration of alternative cosmological models, including the Quantum Big Bounce and finite universe model with terminal sliding dynamics. The research investigates how quantum corrections to general relativity regulate singularities and contribute to early-universe structure formation. It examines the role of the Higgs field and other fundamental forces in influencing density stability and the formation of high-density regions, including primordial black holes. Each paper focuses on different aspects, from theoretical models to numerical simulations and observational validation. With advancements in technologies such as LIGO, LISA, and the James Webb Space Telescope, these models provide testable predictions through gravitational waves and Cosmic Microwave Background (CMB) observations, enriching our understanding of quantum cosmology and spacetime structure.