Saturday, November 30, 2019

The vacuum polarization loop

›
The ideas of Gordon in Compton scattering have helped us forward with the analysis of the vacuum polarization loop in Feynman diagrams. ...

Why does Feynman use a Green's function to describe the electric field of an electron?

›
In the electron-electron collision diagram, one electron sends a virtual photon, carrying some 4-momentum. The other electron absorbs this p...
Sunday, November 3, 2019

If a photon is an orbiting virtual electron-positron pair, does that explain Compton scattering?

›
https://en.wikipedia.org/wiki/Compton_scattering Thomson scattering means that a low-energy photon is scattered by an electron at rest. ...
Monday, October 21, 2019

If Navier-Stokes allows simulation of a Turing machine, then Gödel may make existence of a solution undecidable

›
Let us consider the Navier-Stokes equation of perfect fluid, with no atoms or other type of a cutoff at very short distances. Solutions ...
Saturday, October 19, 2019

A swarm of virtual quanta: a possible solution to the renormalization problem of QED

›
UPDATE October 27, 2019: If there is just a single vacuum polarization loop, the loop length is 2, and the propagator for large k is roughly...
Friday, October 11, 2019

What is the bare charge of an electron?

›
The scattering experiment in our previous blog post can be interpreted as a way to measure the electric repulsion between two electrons, and...
Thursday, October 10, 2019

Scattering of two electrons is a classical field phenomenon - is renormalization really needed?

›
In last fall we promised in this blog that we will show that the divergences in the Feynman loop diagrams are an artifact, which is a result...