Strings below the Planck Scale
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چکیده
We show that, for a class of critical strings in R × S 1-target space, the description of string theory given by its field content (analog model) breaks down when the radius of S 1 decreases below R 0 = √ α ′ , the self-dual point of the partition function Z(R). We find that Z(R) has a soft singularity at R 0 (a finite jump in the first derivative of Z).
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تاریخ انتشار 1992