9,529 research outputs found
Update on Open Universe Inflationary Models
An overview of some new results in open inflation over the past year,
including the calculation of gravity wave contributions to the Cosmic Microwave
Background. Proceedings for COSMO-97, held in Ambleside, U.K., hence very short
due to space limitations (the version for the web is more than 3 pages because
archive numbers have been added for the references).Comment: LaTeX, uses sprocl.tex, 4 pages, corrected reference typ
Open universes from bubbles: an introduction and update
An introduction to models of open universes originating from bubbles,
including a summary of recent theoretical results for the power spectrum. To
appear in the proceedings of the XXXIth Moriond meeting, "Microwave Background
Anisotropies."Comment: LaTeX file, uses epsf.tex, 3 figures, 8 pages, minor wording changes
to clarify discussion of coordinate system
The Strength of String Nonperturbative Effects and Strong-Weak Coupling Duality
A strong-weak coupling duality symmetry of the string equations of motion has
been suggested in the literature. This symmetry implies that vacua occur in
pairs. Since the coupling constant is a dynamical variable in string theory,
tunneling solutions between strong and weak coupling vacua may exist. Such
solutions would naturally lead to nonperturbative effects with anomalous
coupling dependence. A highly simplified example is given.Comment: 7 pages, iassns-hep-93-24, fermilab 93/087-T, nsf-itp-93-45 (A simple
example of the mechanism suggested has been added.
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