Gauge invariant metric fluctuations in the early universe from STM theory of gravity: nonperturbative formalism

2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/192633We develop a nonperturbative quantum field formalism to describe scalar gauge-invariant metric flucturations in the early universe from a 5D apparent (Ricci flat) vacuum.version accepted in Physics Letters BGeneral Relativity and Quantum CosmologyHigh Energy Physics - TheoryGauge invariant metric fluctuations in the early universe from STM theory of gravity: nonperturbative formalismtext