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The physical history of the Universe is completed by including the quantumplanckian and trans-planckian phase before Inflation in the Standard Model ofthe Universe in agreement with observations. A new quantum precursor phaseappears beyond the Planck scale. We extend de Sitter universe to the quantumdomain: classical-quantum de Sitter duality. As a result: The classical andquantum dual de Sitter Temperatures and Entropies are naturally included, andthe different (classical, semiclassical, quantum planckian and super-planckian)de Sitter regimes characterized in a precise and unifying way. Relevantcosmological examples as Inflation and Dark Energy are described. This allowsto find in a simple and consistent way: Quantum Inflationary spectra and theirCMB observables, including in particular the classical known Inflation spectraand the quantum corrections to them. A unifying picture for the Universe epochsand their quantum precursors emerges with the cosmological constant as thevacuum energy, entropy and temperature of the Universe, shedding light into thecosmological constant problem (Abridged).

New Quantum Phase of the Universe before Inflation and its Cosmological and Dark Energy Implications