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Old Puzzles

Christof Schmidhuber
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Abstract

In this talk I first briefly review how far we have come in answering old questions about the most fundamental building blocks of matter. I begin with things we know, which is the Standard Model, and then talk about things we can guess, which is superstring theory. After this review I discuss a key point at which our understanding of superstring theory presently stops: the problem of supersymmetry breaking and the cosmological constant. I explain in which direction I imagine a way out. This way out predicts gravitinos and dilatons with masses of order milli-eV.

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Christof Schmidhuber. 2002-07-22. Old Puzzles. https://arxiv.org/abs/hep-th/0207203

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