I have an acquaintance who maintains that in quantum field theory, primarily the cgs system is used. OK, I know it's not really important, but I was under the impression that everyone had switched to SI. (My book on quantum field theory has very few actual quantities with units outside of GeV, so I couldn't check it there.) So, for example, if one had a text that covered both astronomical distances and nuclear distances, and one wished to use a single base unit (instead of having everything from light years down to femtometers), would one typically choose meters or centimeters?(adsbygoogle = window.adsbygoogle || []).push({});

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# I Cgs or SI in quantum field theory?

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