Gravitational Wave Production At The End Of Inflation

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dc.creatorEasther, Richard
dc.creatorGiblin Jr, John T.
dc.creatorLim, Eugene A.
dc.date2006-12-11
dc.date2007-09-20
dc.date.accessioned2026-07-07T11:00:28Z
dc.date.available2026-07-07T11:00:28Z
dc.descriptionWe consider gravitational wave production due to parametric resonance at the end of inflation, or ``preheating''. This leads to large inhomogeneities which source a stochastic background of gravitational waves at scales inside the comoving Hubble horizon at the end of inflation. We confirm that the present amplitude of these gravitational waves need not depend on the inflationary energy scale. We analyze an explicit model where the inflationary energy scale is ~10^9 GeV, yielding a signal close to the sensitivity of Advanced LIGO and BBO. This signal highlights the possibility of a new observational ``window'' into inflationary physics, and provides significant motivation for searches for stochastic backgrounds of gravitational waves in the Hz to GHz range, with an amplitude on the order of Ω_{gw}(k)h^2 ~ 10^-11. Finally, the strategy used in our numerical computations is applicable to the gravitational waves generated by many inhomogeneous processes in the early universe.
dc.description4 pages, Revtex, 2 figures. v2 References added, discussion clarified and improved. v3 further clarification, typo regarding source corrected. Basic results unchanged
dc.identifierhttps://arxiv.org/abs/astro-ph/0612294
dc.identifierhttp://arxiv.org/abs/astro-ph/0612294
dc.identifierPhys.Rev.Lett.99:221301,2007
dc.identifierdoi:10.1103/PhysRevLett.99.221301
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/187683
dc.subjectAstrophysics
dc.titleGravitational Wave Production At The End Of Inflation
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