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The Little Book of String Theory by Steven S. Gubser

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EPILOGUE

THERE ARE MANY ASPECTS OF STRING THEORY WE COULD ponder after the tour of the subject we have just completed. We could ponder the peculiar demands it seems to make on spacetime, like ten dimensions and supersymmetry. We could ponder the peculiar objects whose existence it requires, everything from D0-branes to end-of-the-world branes. We could ponder its tenuous but improving connection to experimental physics. We could also weigh the controversy that it generates: Is string theory worthwhile? Overhyped? Unduly maligned?

As fascinating as all these topics are, the topic that I think is most worth ending with is the mathematics that forms the core of string theory. Readers of my generation may remember the Wendy’s commercial where the ...

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