Causality, Randomness, and the Microwave Background

1995/05/31 by Andreas Albrecht, David Coulson, Pedro G. Ferreira +3 · 134 citations
Physics and Astronomy · #Anisotropy #Astrophysics #Causality (physics) #Cosmic microwave background #Cosmology #Cosmology and Gravitation Theories #Galaxies: Formation, Evolution, Phenomena #Inflation (cosmology) #Microwave #Physics #Planck #Quantum mechanics #Radio Astronomy Observations and Technology #Randomness #Statistical physics #Statistics #Theoretical physics #astro-ph

paper · pdf · doi:10.1103/physrevlett.76.1413

published in Physical Review Letters 76(9), 1413-1416 (American Physical Society) · uuencoded tex file and 4 postscript figure files, 8 pages. Also available at http://euclid.tp.ph/Papers/index.html; Changes: Minor changes reflect final published version

openalex publication_date 1996/02/26 · arxiv created 1996/02/29 · arxiv updated 2010/04/08 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05

Abstract

Fluctuations in the cosmic microwave background (CMB) temperature are being studied with ever increasing precision. Two competing types of theories might describe the origins of these fluctuations: ``inflation'' and ``defects.'' Here we show how the differences between these two scenarios can give rise to striking signatures in the microwave fluctuations on small scales, assuming a standard recombination history. These should enable high resolution measurements of CMB anisotropies to distinguish between these two broad classes of theories, independent of the precise details of each.

Citations

• Inflation and squeezed quantum states
• Topology of cosmic domains and strings

Cited by

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• Full separability criterion for tripartite quantum systems
• Polarization of the Microwave Background in Defect Models
• Scalar, vector, and tensor contributions to CMB anisotropies from cosmic defects
• Causality and the Doppler peaks
• Primordial Adiabatic Fluctuations from Cosmic Defects
• Primordial Gaussian fluctuations from cosmic defects
• Cosmic Microwave Background Anisotropy Induced by Cosmic Strings on Angular Scales≳15′
• Entanglement dynamics of two-bipartite system under the influence of dissipative environments
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• CANNY ALGORITHM, COSMIC STRINGS AND THE COSMIC MICROWAVE BACKGROUND
• Conceptual Problems of Inflationary Cosmology and a New Approach to Cosmological Structure Formation
• Separability criterion and inseparable mixed states with positive partial transposition