Cosmological Perturbations from the No Boundary Euclidean Path Integral

Details Cosmological Perturbations from the No Boundary Euclidean Path Integral Cosmological Perturbations from the No Boundary Euclidean Path Integral

1999-02-18

arxiv.org/abs/astro-ph/9902265v1

Phys.Rev. D60 (1999) 123507

Astronomy and Astrophysics

Astrophysics

21 pages, RevTex file, including five postscript figure files

Scientific paper

10.1103/PhysRevD.60.123507

We compute, from first principles, the quantum fluctuations about instanton saddle points of the Euclidean path integral for Einstein gravity coupled to a scalar field. The Euclidean two-point correlator is analytically continued into the Lorentzian region where it describes the quantum mechanical vacuum fluctuations in the state described by no boundary proposal initial conditions. We concentrate on the density perturbations in open inflationary universes produced from cosmological instantons, describing the differences between non-singular Coleman-De Luccia and singular Hawking-Turok instantons. We show how the Euclidean path integral uniquely specifies the fluctuations in both cases.

Affiliated with

Also associated with

No associations

Rating

Cosmological Perturbations from the No Boundary Euclidean Path Integral does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Cosmological Perturbations from the No Boundary Euclidean Path Integral, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Cosmological Perturbations from the No Boundary Euclidean Path Integral will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-80656