ON THE ZERO COSMOLOGICAL CONSTANT SUGRA AND THE ASYMMETRIC ORBIFOLD

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Abstract
In this paper, we give a brief review of the orbifold compactification of Superstrings and describe how the spectrum of zero-modes determines the structure of the 'low'-energy compactified theory. We show how the asymmetric orbifold can lead to a 'low'-energy N = 1 SUGRA theory that continues to have a zero cosmological constant even after supersymmetry is broken. We discuss the implications the asymmetric orbifold can have for a new scenario of the hierarchy of compactification scales.

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