Deconstructing the Cosmological Constant

TL;DR

This paper explores how deconstruction in gravity offers new insights into the holographic principle and the cosmological constant problem, suggesting a link with supersymmetry and unitarity to explain its small value.

Contribution

It introduces a novel deconstruction approach to four-dimensional gravity that connects holography, supersymmetry, and the cosmological constant problem.

Findings

Deconstruction addresses ultraviolet issues in gravity.

Holography is linked to unitarity and diffeomorphism invariance.

Small cosmological constant explained by holography and supersymmetry.

Abstract

Deconstruction provides a novel way of dealing with the notoriously difficult ultraviolet problems of four-dimensional gravity. This approach also naturally leads to a new perspective on the holographic principle, tying it to the fundamental requirements of unitarity and diffeomorphism invariance, as well as to a new viewpoint on the cosmological constant problem. The numerical smallness of the cosmological constant is implied by a unique combination of holography and supersymmetry, opening a new window into the fundamental physics of the vacuum.