Gibbons-Hawking Entropy and BMN Strings

TL;DR

This paper explores the concept of a universal entropy bound in quantum gravity and investigates how BMN strings could test this idea and estimate the cosmological constant.

Contribution

It introduces the idea of a universal entropy bound and proposes BMN strings as a tool to test and estimate the cosmological constant.

Findings

Proposes a universal finite upper bound for observable entropy.

Suggests BMN strings can test the entropy bound.

Provides a possible estimate of the cosmological constant.

Abstract

We provide some up-to-date discussions related to cosmological event horizon and entropy of our universe, then introduce an intriguing idea that there may be a universal finite upper bound for entropy accessible to an observer in consistent theories of quantum gravity. We argue that the BMN (Berenstein-Maldacena-Nastase) strings provide a test of the idea and a possible estimate of the cosmological constant.