References & Citations
High Energy Physics - Phenomenology
Title: Can Geodesics in Extra Dimensions Solve the Cosmological Horizon Problem?
(Submitted on 5 Oct 1999 (v1), last revised 12 Oct 2000 (this version, v2))
Abstract: We demonstrate a non-inflationary solution to the cosmological horizon problem in scenarios in which our observable universe is confined to three spatial dimensions (a three-brane) embedded in a higher dimensional space. A signal traveling along an extra-dimensional null geodesic may leave our three-brane, travel into the extra dimensions, and subsequently return to a different place on our three-brane in a shorter time than the time a signal confined to our three-brane would take. Hence, these geodesics may connect distant points which would otherwise be ``outside'' the four dimensional horizon (points not in causal contact with one another).
Submission history
From: Daniel J. H. Chung [view email][v1] Tue, 5 Oct 1999 22:56:01 GMT (18kb)
[v2] Thu, 12 Oct 2000 23:19:16 GMT (18kb)