Origin of Small Cosmological Constant in Brane-World

TL;DR

This paper explores how a small cosmological constant can naturally arise in brane-world models through quantum corrections, offering insights into cosmology and parameter constraints.

Contribution

It demonstrates that the tiny cosmological constant can originate from quantum effects in brane-world scenarios, linking holography and cosmological observations.

Findings

Tiny cosmological constant can be derived from quantum corrections.

Holographic perspective provides a framework for understanding the smallness.

Implications for cosmological models and parameter constraints.

Abstract

We address the relation among the parameters of accelerating brane-universe embedded in five dimensional bulk space. It is pointed out that the tiny cosmological constant of our world can be obtained as quantum corrections around a given brane-solution in the bulk theory or in the field theory on the boundary from the holographic viewpoint.Some implications to the cosmology and constarints on the parameters are also given.