A New Spin on Quantum Gravity

TL;DR

This paper proposes that quantum spin-statistics could explain the small cosmological constant and holographic properties of gravity, using the 'quon' model to connect quantum statistics with cosmological phenomena.

Contribution

It introduces a novel hypothesis linking quantum spin-statistics to gravity's holography and cosmological constant, supported by the 'quon' model as an illustrative example.

Findings

Quon model can produce an arbitrarily small cosmological constant.

Potential observable effects on cosmological fluctuations from inflation.

Links between quantum spin properties and gravitational holography.

Abstract

We suggest that the (small but nonvanishing) cosmological constant, and the holographic properties of gravitational entropy, may both reflect unconventional quantum spin-statistics at a fundamental level. This conjecture is motivated by the nonlocality of quantum gravity and the fact that spin is an inherent property of spacetime. As an illustration we consider the `quon' model which interpolates between fermi and bose statistics, and show that this can naturally lead to an arbitrarily small cosmological constant. In addition to laboratory tests, we briefly discuss the possible observable imprint on cosmological fluctuations from inflation.