Strange Posted February 13, 2019 Posted February 13, 2019 I came across a couple of articles that, for different reasons, argue that string theory cannot be correct. The first, from the failure to find evidence for supersymmetry: Quote As always, continued experimentation will be the ultimate arbiter of nature, but no reasonable person can justifiably conclude that SUSY is supported by the evidence. If SUSY is wrong, a lot of people will have invested their entire careers in one of the most interesting blind alleys we've ever gone down. If there is no SUSY in nature at any energy scale (including the Planck Scale, although this will be a challenge to test), then string theory, which leads to SUSY, cannot describe our Universe. https://www.forbes.com/sites/startswithabang/2019/02/12/why-supersymmetry-may-be-the-greatest-failed-prediction-in-particle-physics-history/ The second looks at the types of universes that are possiblest in string theory: Quote A controversial new paper argues that universes with dark energy profiles like ours do not exist in the “landscape” of universes allowed by string theory. https://www.quantamagazine.org/dark-energy-may-be-incompatible-with-string-theory-20180809/
beecee Posted February 13, 2019 Posted February 13, 2019 I have often seen remarks re the beauty of string theory, despite the fact that we are unable as yet to observe at those levels. Is this finally the death knell for string and its many derivatives? Havn't read the two links as yet...busy day to day!
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