Cosmic Microwave Background Anisotropies and Extra Dimensions in String Cosmology

A. Melchiorri, F. Vernizzi, R. Durrer, and G. Veneziano
Phys. Rev. Lett. 83, 4464 – Published 29 November 1999
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Abstract

A recently proposed mechanism for large-scale structure in string cosmology—based on massless axionic seeds—is further analyzed and extended to the acoustic-peak region. Existence, structure, and height of the peaks turn out to depend crucially on the overall evolution of extra dimensions during the pre–big bang phase: Conversely, precise cosmic microwave background anisotropy data in the acoustic-peak region will provide a window on the extra dimensions from string theory before their eventual compactification.

  • Received 20 May 1999

DOI:https://doi.org/10.1103/PhysRevLett.83.4464

©1999 American Physical Society

Authors & Affiliations

A. Melchiorri1,3, F. Vernizzi1, R. Durrer1, and G. Veneziano2

  • 1Département de Physique Théorique, Université de Genève, 24 quai Ernest Ansermet, CH-1211 Genève 4, Switzerland
  • 2CERN Theory Division, CH-1211, Genève 23, Switzerland
  • 3Dipartimento di Fisica, Università di Roma Tor Vergata, Via della Ricerca Scientifica, Roma, I-00133, Italy

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Issue

Vol. 83, Iss. 22 — 29 November 1999

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