Gravitational waves in preheating

Daniel Tilley, Roy Maartens

Research output: Contribution to journalArticlepeer-review


We study the evolution of gravitational waves through the preheating era that follows inflation. The oscillating inflaton drives parametric resonant growth of scalar field fluctuations, and although super-Hubble tensor modes are not strongly amplified, they do carry an imprint of preheating. This is clearly seen in the Weyl tensor, which provides a covariant description of gravitational waves.
Original languageEnglish
Pages (from-to)2875-2883
JournalClassical and Quantum Gravity
Issue number15
Publication statusPublished - 7 Aug 2000


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