Towards a Holographic Theory of Cosmology — Threads in a Tapestry
In this paper, we address several fundamental issues in cosmology: What is the nature of dark energy and dark matter? Why is the dark sector so different from ordinary matter? Why is the effective cosmological constant nonzero but so incredibly small? What is the reason behind the emergence of a critical acceleration parameter of magnitude 10-8 cm/s2 in galactic dynamics? We suggest that the holographic principle is the linchpin in a unified scheme to understand these various issues.