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Astron. Astrophys. 359, 414-418 (2000)

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Detectability of the primordial origin of the gravitational wave background in the Universe

J. Lesgourgues 1, D. Polarski 2,3, S. Prunet 4,5 and A.A. Starobinsky 6

1 SISSA-ISAS, Via Beirut 4, 34014 Trieste, Italy
2 LMPT, UPRES-A 6083 CNRS, Université de Tours, Parc de Grandmont, 37200 Tours, France
3 DARC, Obs. de Paris-Meudon, 92195 Meudon Cedex, France
4 IAP, CNRS, 98bis Boulevard Arago, 75014 Paris, France
5 CITA, 60 St George Street, Toronto, Ontario M5S 3H8, Canada
6 Landau Inst. for Theoretical Physics, Kosygina St. 2, Moscow 117334, Russia

Received 18 April 2000 / Accepted 22 April 2000


The appearance of peaks in the Fourier power spectra of various primordial fluctuations is a generic prediction of the inflationary scenario. We investigate whether future experiments, in particular the satellite experiment PLANCK, will be able to detect the possible appearance of these peaks in the B-mode polarization multipole power spectrum. This would yield a conclusive proof of the presence of a primordial background of gravitational waves.

Key words: cosmology: cosmic microwave background – gravitational waves

Send offprint requests to: S. Prunet (prunet@cita.utoronto.ca)

© European Southern Observatory (ESO) 2000

Online publication: June 30, 2000