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Quantum / gauge field -> Classical limit
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May3-10, 04:28 PM
Hello all quantum nerds! :D
I have a question regarding the "classical" limit of quantum fields, and in particular gauge fields.
When we for instance do a surface integration in QFT, we let phi -> 0 as V->oo
why? this is said in textbooks to correspond to the "classical limit",
and for gauge fields, one lets the field strength tensor F_mu,nu -> 0 which makes the gauge potential go to zero or a gauge transformation of 0.
So why these boundaries in the "classical" limit (V->oo)
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