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  Is the squeezing of relic gravitational waves produced by inflation detectable?

Allen, B., Flanagan, E. E., & Papa, M. A. (1999). Is the squeezing of relic gravitational waves produced by inflation detectable? Physical Review D, 61(2): 024024. doi:10.1103/PhysRevD.61.024024.

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Datensatz-Permalink: http://hdl.handle.net/11858/00-001M-0000-0013-580A-5 Versions-Permalink: http://hdl.handle.net/11858/00-001M-0000-0013-580B-3
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 Urheber:
Allen, Bruce1, Autor              
Flanagan, Eanna E., Autor
Papa, Maria Alessandra2, Autor              
Affiliations:
1Observational Relativity and Cosmology, AEI-Hannover, MPI for Gravitational Physics, Max Planck Society, ou_24011              
2Astrophysical Relativity, AEI-Golm, MPI for Gravitational Physics, Max Planck Society, ou_24013              

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 Zusammenfassung: Grishchuk has shown that the stochastic background of gravitational waves produced by an inflationary phase in the early Universe has an unusual property: it is not a stationary Gaussian random process. Due to squeezing, the phases of the different waves are correlated in a deterministic way, arising from the process of parametric amplification that created them. The resulting random process is Gaussian but non-stationary. This provides a unique signature that could in principle distinguish a background created by inflation from stationary stochastic backgrounds created by other types of processes. We address the question: could this signature be observed with a gravitational wave detector? Sadly, the answer appears to be "no": an experiment which could distinguish the non-stationary behavior would have to last approximately the age of the Universe at the time of measurement. This rules out direct detection by ground and space based gravitational wave detectors, but not indirect detections via the electromagnetic Cosmic Microwave Background Radiation (CMBR).

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 Datum: 1999-12-27
 Publikationsstatus: Im Druck publiziert
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 Identifikatoren: eDoc: 206103
URI: http://link.aps.org/doi/10.1103/PhysRevD.61.024024
Anderer: arxiv:gr-qc/9906054v2
DOI: 10.1103/PhysRevD.61.024024
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Titel: Physical Review D
Genre der Quelle: Zeitschrift
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Seiten: - Band / Heft: 61 (2) Artikelnummer: 024024 Start- / Endseite: - Identifikator: -