A new paper on non-baryonic dark matter in cosmology has sparked discussion, with participants noting its relevance to current research. The article highlights the effects of dark matter on gravitational lensing, particularly in relation to the Bullet Cluster. Participants express appreciation for the thorough coverage of these topics. The correct link to the paper is confirmed as http://arxiv.org/abs/1305.0456. This discussion emphasizes the importance of understanding non-baryonic dark matter in the context of cosmological studies.