Gravity waves from quantum stress tensor fluctuations in inflation

Chun Hsien Wu, Jen Tsung Hsiang, L. H. Ford, Kin Wang Ng

研究成果: 雜誌貢獻期刊論文同行評審

9 引文 斯高帕斯(Scopus)


We consider the effects of the quantum stress tensor fluctuations of a conformal field in generating gravity waves in inflationary models. We find a nonscale invariant, non-Gaussian contribution which depends upon the total expansion factor between an initial time and the end of inflation. This spectrum of gravity wave perturbations is an illustration of a negative power spectrum, which is possible in quantum field theory. We discuss possible choices for the initial conditions. If the initial time is taken to be sufficiently early, the fluctuating gravity waves are potentially observable both in the CMB radiation and in gravity wave detectors, and could offer a probe of trans-Planckian physics. The fact that they have not yet been observed might be used to constrain the duration and energy scale of inflation. However, this conclusion is contingent upon including the contribution of modes which were trans-Planckian at the beginning of inflation.

期刊Physical Review D - Particles, Fields, Gravitation and Cosmology
出版狀態已出版 - 11 11月 2011


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