Seminarium Teorii Względności i Grawitacji

In this talk, I will explore various facets of the Lambda-CDM model and its motivated alternative theories, including bouncing cosmologies, ultralight dark matter, gravitational wave phenomena, holographic dark energy, and inflation. Our findings shed light on long-standing challenges in cosmology, such as the initial singularity problem, the origins of cosmological perturbations, large-scale anomalies in the CMB, and the nature of dark energy and dark matter.