[1109.0542] New Sources of Gravitational Waves during Inflation

Authors: Leonardo Senatore, Eva Silverstein, Matias Zaldarriaga

Date: 2 Sep 2011

Abstract: We point out that detectable inflationary tensor modes can be generated by particle or string sources produced during inflation, consistently with the requirements for inflation and constraints from scalar fluctuations. We show via examples that this effect can dominate over the contribution from quantum fluctuations of the metric, occurring even when the inflationary potential energy is too low to produce a comparable signal. Thus a detection of tensor modes from inflation does not automatically constitute a determination of the inflationary Hubble scale.

abs pdf

Sep 09, 2011

1109.0542 (/preprints)
2011-09-09, 06:51 [edit]

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Tantum in modicis, quantum in maximis