Gravity Waves from Chain Inflation

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dc.creatorAshoorioon, Amjad
dc.creatorFreese, Katherine
dc.date2008-11-14
dc.date.accessioned2026-07-07T10:19:41Z
dc.date.available2026-07-07T10:19:41Z
dc.descriptionChain inflation proceeds through a series of first order phase transitions, which can release considerable gravitational waves (GW). We demonstrate that bubble collisions can leave an observable signature for future high-frequency probes of GWs, such as advanced LIGO, LISA and BBO. A "smoking gun" for chain inflation would be wiggles in the spectrum (and consequently in the tensor spectral index) due to the multiple phase transitions. The spectrum could also be distinguished from a single first order phase transition by a small difference in the amplitude at low frequency. A second origin of GWs in chain inflation are tensor modes from quantum fluctuations; these GW can dominate and be observed on large scales. The consistency relation between scalar and tensor modes is different for chain inflation than for standard rolling models and is testable by Cosmic Microwave Background experiments. If inflation happened through a series of rapid tunnelings in the string landscape, future high frequency probes of GW can shed light on the structure of the landscape.
dc.description6 pages, two-column, 4 figures
dc.identifierhttps://arxiv.org/abs/0811.2401
dc.identifierhttp://arxiv.org/abs/0811.2401
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/174596
dc.subjectHigh Energy Physics - Theory
dc.subjectAstrophysics
dc.subjectHigh Energy Physics - Phenomenology
dc.titleGravity Waves from Chain Inflation
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