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1 e e + e e - qq qq e e + e e - qq qq e e + + e e - qq qq e e + e e - qq qq e e + e e - qq qq e e + e e - qq qq e e + + e e - - qq qq e e + + e e - - qq qq e e + e e - qq qq e e + + e e - - qq qq e e + + e e - - qq qq e e + e e - - qq qq qq qq qq qq e e + + e e - qq qq e e + + e e - qq qq qq qq e e + e e - Much ado about NOTHING: Much ado about NOTHING: Nothing is something Nothing is something Nothing has energy Nothing has energy Nothing interacts with Nothing interacts with something something -R. Kolb

1 e+e-e+e-e+e-e+e-qq e+e-e+e-e+e-e+e-qq e+e-e+e-e+e-e+e-qq e+e-e+e-e+e-e+e-qq e+e-e+e-e+e-e+e-qq e+e-e+e-e+e-e+e-qq e+e-e+e-e+e-e+e-qq e+e-e+e-e+e-e+e-qq

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Page 1: 1 e+e-e+e-e+e-e+e-qq e+e-e+e-e+e-e+e-qq e+e-e+e-e+e-e+e-qq e+e-e+e-e+e-e+e-qq e+e-e+e-e+e-e+e-qq e+e-e+e-e+e-e+e-qq e+e-e+e-e+e-e+e-qq e+e-e+e-e+e-e+e-qq

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Much ado about NOTHING:Much ado about NOTHING:

Nothing is somethingNothing is something

Nothing has energy Nothing has energy

Nothing interacts with somethingNothing interacts with something

-R. Kolb

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Page 6: 1 e+e-e+e-e+e-e+e-qq e+e-e+e-e+e-e+e-qq e+e-e+e-e+e-e+e-qq e+e-e+e-e+e-e+e-qq e+e-e+e-e+e-e+e-qq e+e-e+e-e+e-e+e-qq e+e-e+e-e+e-e+e-qq e+e-e+e-e+e-e+e-qq

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Modern accelerators study processes at energies that existed VERY early in the universe

Another form of time travel !

What were forces like at those temperatures?

What types of particles existed?