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Why I Still Like String Theory
Abstract
Why I Still Like String Theory? The main one is that it solves the problem of how quantum theory looks in the perturbative limit about a flat space-time with gravitons interacting with matter. The second one is that it supports a holographic principle that is also required for quantum gravity. The third one is that it would match well with TeV scale SUSY, but the LHC might have now ruled that out. Further, it predicts a multiverse of vacua in the right quantities required to explain anthropic reasoning for an unnatural fine-tuned particle theory.