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A conversation between Andy Strominger and Stephen Wolfram (June 26 2021)

The Stephen Wolfram Podcast

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Is There a Massless String?

There is something called the tensionless string, a in which you set the tension to zero. There's a lot of symmetry in that theory that's not very well understood. The reason it doesn't have a mass is that there's an offset right at the beginning, coming from the casmere energy of the the string.

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