Register to reply

Quantum / gauge field -> Classical limit

by ansgar
Tags: classical, field, gauge, limit, quantum
Share this thread:
ansgar
#1
May3-10, 04:28 PM
P: 505
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)

Best regards
Phys.Org News Partner Physics news on Phys.org
Physicists unlock nature of high-temperature superconductivity
Serial time-encoded amplified microscopy for ultrafast imaging based on multi-wavelength laser
Measuring the smallest magnets: Physicists measured magnetic interactions between single electrons

Register to reply

Related Discussions
Classical limit of Quantum Optics Quantum Physics 2
Difference between a classical and quantum field theory? Quantum Physics 0
Quantum to classical transition or classical limit ? Quantum Physics 0