Quantum Fisher Cosmology: Confronting Observations and the Trans-Planckian Problem

Abstract

The aim of Quantum Fisher Cosmology is to use the quantum Fisher information about pure de Sitter states to derive model independent observational consequences of the existence of a primordial phase of the Universe of de Sitter accelerated expansion. These quantum features are encoded in a scale dependent quantum cosmological tilt that defines what we can call the de Sitter universality class. The experimental predictions are: i) A phase transition from red into blue tilt at a scale order $k=1$ Mpc${}^{-1}$ that naturally solves the cosmological trans-Planckian problem, ii) A spectral index for curvature fluctuations at CMB scales $k=0.05$ Mpc${}^{-1}$ equal to $0.0328$, iii) A tilt running at scale $k=0.002$ Mpc${}^{-1}$ equal to $-0.0019$, iv) An enhancement of the amplitude of CMB peaks for extremely high multipoles ($l>10^5$) that can provide a natural mechanism for primordial black hole formation as a source of dark matter, v) A lack of power at scales of $8$ Mpc with respect to the CMB scale that can explain the ${\sigma }_8$ tension.

arXiv commentMatches accepted version to JCAP. Added a longer explanation on the role of the alpha-vacua and how quantum fisher is evaluated in their presence. Results unchanged

References in corpus (29)

• Information in Black Hole Radiation
• KiDS-1000 Cosmology: Cosmic shear constraints and comparison between two point statistics
• Distance and de Sitter Conjectures on the Swampland
• Bounds on Slow Roll and the de Sitter Swampland
• Conformal Vacua and Entropy in de Sitter Space
• De Sitter Space and Eternity
• Trans-Planckian Censorship and the Swampland
• Measurements of the E-Mode Polarization and Temperature-E-Mode Correlation of the CMB from SPT-3G 2018 Data
• Trans-Planckian Censorship and Inflationary Cosmology
• Quantum Compositeness of Gravity: Black Holes, AdS and Inflation
• Trans-Planckian Issues for Inflationary Cosmology
• Quantum Break-Time of de Sitter
• On the Instability of Global de Sitter Space to Particle Creation
• Quantum Breaking Bound on de Sitter and Swampland
• On the consistency of de Sitter vacua
• Entanglement Entropy of Cosmological Perturbations
• The trouble beyond $H_0$ and the new cosmic triangles
• Universal Upper Bound on the Inflationary Energy Scale from the Trans-Planckian Censorship Conjecture
• Back-Reaction of Super-Hubble Cosmological Perturbations Beyond Perturbation Theory
• Cosmology from Quantum Information
• Cosmological Trans-Planckian Conjectures are not Effective
• Peering beyond the horizon with standard sirens and redshift drift
• Inflation and Decoupling
• Model Independent Prediction of the Spectral Index of Primordial Quantum Fluctuations
• How Gaussian can the Sky be? Primordial Non-Gaussianity from Quantum Information
• Dark matter from primordial quantum information
• Enhanced spectrum of primordial perturbations, galaxy formation and small scale structure
• The Quantum Origin of Quasi de Sitter: a Model Independent Quantum Cosmological Tilt
• The quantum cosmological tilt and the origin of dark matter

Cited by in corpus (3)

• Cosmology Intertwined: A Review of the Particle Physics, Astrophysics, and Cosmology Associated with the Cosmological Tensions and Anomalies
• The quantum de Sitter root of quasi de Sitter observables: a pedagogical review
• On the nonclassicality in quantum JT gravity