Self-sustained, out-of-equilibrium inflation

[摘要] We use holography to study dS-invariant states of non-conformal, strongly coupled quantum field theories in four-dimensional de Sitter space. We show that out-of-equilibrium effects can sustain the exponential inflation within the regime of validity of semiclassical gravity, H ≪ M ≪ Msp, with H the Hubble parameter, M the characteristic scale of the quantum field theory, Msp = Mp/N the species scale, Mp the Planck scale, and N2 the number of matter fields. In the holographic description, the required fine-tuning scales only logarithmically with the ratio Msp/H. The resulting solutions exhibit apparent horizons whose increasing area indicates a continuous growth of the comoving entropy density. We suggest that this inflationary regime can arise as the late-time limit of a dynamical evolution starting from an initial Friedmann–Lemaître–Robertson–Walker universe.

[发布日期] 2026-09-04

[关键词] AdS-CFT Correspondence;Gauge-Gravity Correspondence