Zero Cosmological Constant and Nonzero Dark Energy from Holographic Principle

TL;DR

This paper demonstrates that applying the holographic principle and thermodynamics to cosmic horizons naturally leads to a zero cosmological constant and a dynamic form of dark energy consistent with observations, suggesting modifications to quantum field theory at large scales.

Contribution

It shows that holographic principles imply a non-zero dark energy with specific properties and connects this to modifications in quantum field theory and entropic gravity.

Findings

Holographic dark energy has a parameter d=1.

Equation of state matches observational data.

Large-scale quantum field theory needs modification.

Abstract

It is shown that the first law of thermodynamics and the holographic principle applied to an arbitrary large cosmic causal horizon naturally demand the zero cosmological constant and non-zero dynamical dark energy in the form of the holographic dark energy. Semiclassical analysis shows that the holographic dark energy has a parameter $d=1$ and an equation of state comparable to current observational data, if the entropy of the horizon saturates the Bekenstein-Hawking bound. This result indicates that quantum field theory should be modified at large scale to explain dark energy. The relations among dark energy, quantum vacuum energy and entropic gravity are also discussed.