Lorentz Violation in Emergent Gravity and Its Cosmological Consequences

TL;DR

This paper explores how emergent gravity models can lead to controlled Lorentz violations, potentially explaining cosmic acceleration and impacting cosmological observations.

Contribution

It introduces a novel perspective on emergent gravity as a thermodynamic cycle, linking Lorentz violation to cosmological phenomena.

Findings

Lorentz violations can drive late-time cosmic acceleration

Emergent gravity modeled as a thermodynamic cycle

Implications for cosmological constant and structure formation

Abstract

We show that General Relativity and other geometrical theories can be viewed as a degenerate Otto cycle with only heat-exchange legs in emergent gravity. Including work-producing legs yields controlled violations of local Lorentz invariance and energy-momentum conservation, which produce late-time cosmological acceleration. Implications for the cosmological constant problem, structure formation and local observations are discussed.