Answer by HEMMI for How does screening reduce effective charge?
To approach this topic, i considered a simple spherically symmetric problem of a classical electrostatic field.Because it is spherically symmetric, the equation is expressed in spherical...
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Qualitatively, the running of coupling constant is often explained using a charge screening explanation such as that in the images below (1 and 2). It is said that the "bare" charge is not seen as it...
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