New post in Regularization

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

August 1st, 2022

Is QCD free from all divergences?

July 20th, 2020

What does it mean to renormalize an effective field theory?

August 2nd, 2020

How to get the $i\epsilon$ prescription for a Faddeev-Popov ghost propagator?

August 1st, 2022

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

March 10th, 2020

Are constraint forces infinite?

January 28th, 2022

Limit of Lorentzian is Dirac Delta

January 31st, 2020

Is the step of analytic continuation unavoidable or can you model around it?

January 23rd, 2020

Are there books on Regularization and Renormalization in QFT at an Introductory level?

February 1st, 2020

Coulomb potential in 2D

January 31st, 2020

On the Axial Anomaly

August 1st, 2022

Which values of the Riemann zeta function at negative arguments come up in physics?

March 22nd, 2020

Divergent integrals in QFT

May 21st, 2020

Point splitting technique in Peskin and Schroeder

July 22nd, 2020

Laplacian of $1/r^2$ (context: electromagnetism and Poisson equation)

November 14th, 2020

Applications of analytic continuation to physics

March 1st, 2020

Dimensional regularization: removing more than just logarithmic divergencies?

August 1st, 2022

Is QFT mathematically self-consistent?

October 10th, 2020

What is IR CFT and UV CFT?

September 29th, 2020

"Dimensional analysis" arguments in quantum field theory

August 1st, 2022

Critical Dimension of Bosonic Strings and Regularization of $\sum_{n=1}^\infty n$

June 19th, 2020

Why do we expect our theories to be independent of cutoffs?

October 4th, 2020

Regularization of the Casimir effect

December 10th, 2020

Does renormalization make quantum fields into (slightly) nonlinear functionals of test functions?

August 1st, 2022

Can dimensional regularization solve the fine-tuning problem?

March 7th, 2021

Chiral anomalies à la Fujikawa: Why don't we just take another measure?

August 1st, 2022

Why are we scared of singularities?

August 1st, 2022

Why regularization?

May 12th, 2020

I'm missing the point of renormalization in QFT

August 1st, 2022

Don't understand the integral over the square of the Dirac delta function

January 13th, 2020