Trans-Planckian Particle Creation in Cosmology and Ultra-High Energy Cosmic Rays

Abstract

We consider observational constraints on creation of particles induced by hypothetical trans-Planckian effects during the current stage of the Universe expansion. We show that compatibility with the diffuse gamma-ray background measured by the EGRET experiment strongly restricts this creation. In particular, it rules out the possibility to detect signatures of such short distance effects in anisotropies of the cosmic microwave background radiation. On the other hand, a possibility that some part of the ultra-high energy cosmic rays originates from new trans-Planckian physics remains open.

Typos are corrected

Cited by in corpus (57)

• Analogue Gravity
• Quantum Spacetime Phenomenology
• Bouncing Cosmologies: Progress and Problems
• Features and New Physical Scales in Primordial Observables: Theory and Observation
• Quantum-Gravity Analysis of Gamma-Ray Bursts using Wavelets
• Trans-Planckian Issues for Inflationary Cosmology
• Are Inflationary Predictions Sensitive to Very High Energy Physics?
• Transplanckian energy production and slow roll inflation
• Cosmological Perturbations from a New-Physics Hypersurface
• On the consistency of de Sitter vacua
• Back-Reaction and the Trans-Planckian Problem of Inflation Revisited
• Effective Field Theories and Inflation
• A note on alpha-vacua and interacting field theory in de Sitter space
• Initial state effects on the cosmic microwave background and trans-planckian physics
• Short distance and initial state effects in inflation: stress tensor and decoherence
• Primeval Corrections to the CMB Anisotropies
• Can MAP and Planck map Planck physics?
• Decoupling in an expanding universe: backreaction barely constrains short distance effects in the CMB
• CMB quadrupole suppression: I. Initial conditions of inflationary perturbations
• The quantum swampland
• CMB quadrupole suppression: II. The early fast roll stage
• Vacuum Choices and the Predictions of Inflation
• Alpha-states in de Sitter space
• Theoretical tools for CMB physics
• Bounds on Generic High-Energy Physics Modifications to the Primordial Power Spectrum from Back-Reaction on the Metric
• Trans-Planckian wimpzillas
• A First Glimpse of String Theory in the Sky?
• Real-Time Perturbation Theory in de Sitter Space
• Can Planck-scale physics be seen in the cosmic microwave background ?
• Do We Have Evidence for New Physics in the Sky?
• Holographic bounds on the UV cutoff scale in inflationary cosmology
• Miracles and complementarity in de Sitter space
• Assigning Quantum-Mechanical Initial Conditions to Cosmological Perturbations
• Impact of trans-Planckian excitations on black-hole radiation in dipolar condensates
• Relaxing the TCC Bound on Inflationary Cosmology?
• Covariant c-flation: a variational approach
• Probing the initial state of inflation: analytical structure of cosmological correlators
• Quantum Cosmic No-Hair Theorem and Inflation
• Pre-inflationary dynamics of Starobinsky inflation and its generization in Loop Quantum Brans-Dicke Cosmology
• Inflation as a probe of new physics
• $f(T)$ cosmology: From Pseudo-Bang to Pseudo-Rip
• Renormalized Stress Tensor for trans-Planckian Cosmology
• Observing trans-Planckian ripples in the primordial power spectrum with future large scale structure probes
• Cosmological cutting rules for Bogoliubov initial states
• Erratum: Statistical anisotropy in the inflationary universe
• Ultra High Energy Cosmic Rays and de Sitter Vacua
• Explaining low l anomalies in the CMB power spectrum with resonant superstring excitations during inflation
• Possible Evidence for Planck-Scale Resonant Particle Production during Inflation from the CMB Power Spectrum
• Emergence of Fluctuations from a Tachyonic Big Bang
• Inflation with a stringy minimal length, reworked
• Inflationary Cosmology with Quantum Gravitational Effects and the Swampland Conjectures
• Cosmic no-hair theorems for viscous contracting Universes
• Planckian hypersurfaces, inflation and bounces
• The Trans-Planckian Censorship Conjecture in different frameworks of viable inflation
• Theory of Cosmological Perturbations and Applications to Superstring Cosmology
• Constraints on the birth of the universe and origin of cosmic dark flow
• Trans-Planckian quantum corrections and inflationary vacuum fluctuations of non-minimally coupled scalar fields