New post in Renormalization

Degree of divergence of a Feynman diagram

August 1st, 2022

$\phi^{4}$ Propagator - Feynman Diagram: internal vertex that loops back to itself

August 1st, 2022

Is QCD free from all divergences?

July 20th, 2020

Why is mass renormalization insufficient to explain electron mass?

March 13th, 2020

Explanation of Cardy's "a theorem"

November 22nd, 2020

Pole Mass vs. Running Mass vs. Other Running Parameters

April 8th, 2020

Charge Renormalization and Photon Propagator

October 5th, 2020

Renormalized mass

January 13th, 2021

Are the bare parameters of a renormalizable field theory infinitesimal or infinite?

March 25th, 2020

Peskin's book page 334 proof of $Z_1=Z_2$ to all orders in QED perturbation theory

February 7th, 2020

Massless $\lambda \phi^4$ QFT

August 1st, 2022

Unitarity and renormalizability

August 1st, 2022

What happens when you apply the path integral to the Einstein-Hilbert action?

October 8th, 2020

What does it mean to renormalize an effective field theory?

August 2nd, 2020

What is meant by “factorization scale factor” in QCD calculations?

April 4th, 2020

Are the rest masses of fundamental particles certainly constants?

June 6th, 2020

Does the Standard Model have a Landau pole?

August 6th, 2020

What constant varies in the fine structure constant?

September 1st, 2020

What forbids the existence of a $\lambda (A^\mu A_\mu)^2$ term in the Stueckelberg action?

February 22nd, 2020

Basic question about the S-Matrix, Unitarity and Effective Field Theory

December 20th, 2020

Renormalizing composite operators

April 7th, 2020

Is Wilson-Fisher fixed point unique?

September 2nd, 2020

Why are only logarithmic divergence relevant for the Callan-Symanzik equation? Intuitive understanding?

March 10th, 2020

In $d=4$ $g\phi^3$-theory where does the divergence in the 3-point one-loop diagram come from?

September 17th, 2020

Is there a way to justify perturbation theory in QFT?

April 19th, 2020

A question about running coupling constant

May 24th, 2021

Massive vector boson propagators and renormalizability

September 16th, 2021

Why is the correlation function a power law at the critical point?

August 1st, 2022

Modified Maxwell's equations

March 31st, 2020

The relation between anomalous dimensions and renormalization constants

June 9th, 2020