Gravity waves from instantons

Thomas Hertog and Neil Turok
Phys. Rev. D 62, 083514 – Published 27 September 2000
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Abstract

We perform a first principles computation of the spectrum of gravity waves produced in open inflationary universes. The background spacetime is taken to be the continuation of an instanton saddle point of the Euclidean no boundary path integral. The two-point tensor correlator is computed directly from the path integral and is shown to be unique and well behaved in the infrared. We discuss the tensor contribution to the cosmic microwave background anisotropy and show how it may provide an observational discriminant between different types of primordial instantons.

  • Received 27 January 1999

DOI:https://doi.org/10.1103/PhysRevD.62.083514

©2000 American Physical Society

Authors & Affiliations

Thomas Hertog* and Neil Turok

  • DAMTP, Centre for Mathematical Sciences, Wilberforce Rd., Cambridge, CB3 OWA, United Kingdom

  • *Email address: T.Hertog@damtp.cam.ac.uk
  • Email address: N.G.Turok@damtp.cam.ac.uk

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Issue

Vol. 62, Iss. 8 — 15 October 2000

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