Innation, Deeation, and Frame-independence in String Cosmology
نویسنده
چکیده
The innationary scenarios suggested by the duality properties of string cosmol-ogy in the Brans-Dicke (or String) frame are shown to correspond to accelerated contraction (deeation) when Weyl-transformed to the Einstein frame. We point out that the basic virtues of innation (solving the atness and horizon problems, amplifying vacuum uctuations) have physically equivalent counterparts in the de-ationary (Einstein-frame) picture. This could be the answer to some objections recently raised to superstring cosmology.
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تاریخ انتشار 1993