Cosmic Microwave Background Anisotropies and Extra Dimensions in String Cosmology | Zendy

A. Melchiorri | Zendy; Filippo Vernizzi | Zendy; Ruth Durrer | Zendy; G. Veneziano | Zendy

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Cosmic Microwave Background Anisotropies and Extra Dimensions in String Cosmology

Author(s) -

A. Melchiorri,

Filippo Vernizzi,

Ruth Durrer,

G. Veneziano

Publication year - 1999

Publication title -

physical review letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 3.688

H-Index - 673

eISSN - 1079-7114

pISSN - 0031-9007

DOI - 10.1103/physrevlett.83.4464

Subject(s) - physics , cosmic microwave background , compactification (mathematics) , massless particle , cosmology , cosmic string , extra dimensions , anisotropy , big bang (financial markets) , string theory , astrophysics , string (physics) , string cosmology , particle physics , theoretical physics , quantum mechanics , relationship between string theory and quantum field theory , quantum gravity , mathematics , finance , quantum , pure mathematics , economics

A recently proposed mechanism for large-scale structure in string cosmology--based on massless axionic seeds-- is further analyzed and extended to theacoustic-peak region. Existence, structure, and normalization of the peaks turnout to depend crucially on the overall evolution of extra dimensions during thepre-big bang phase: conversely, precise cosmic microwave background anisotropydata in the acoustic-peak region will provide, within the next decade, a windowon string-theory's extra dimensions before their eventual compactification.Comment: 4 pages, 3 figures, to appear in Physical Review Letter

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