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quanta
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4 votes
1 answer
2k views

Renormalization Using Momentum Cut-off Regularization, What Are The Subtraction Schemes Used?

2 votes
2 answers
1k views

Fierz Reordering of Gamma Matrices and Spinors

5 votes
1 answer
812 views

Why Conserved Current Should Not Need Renormalization?

1 vote
0 answers
728 views

How do I derive Feynman rules for vectors involving derivatives?

2 votes
0 answers
683 views

How do the renormalization enter the actual amplitude calculation in QFT?

3 votes
1 answer
675 views

How can we calculate pion decay constant in Chiral Perturbation Theory?

2 votes
0 answers
573 views

Isospin In Kaon Decay

2 votes
0 answers
490 views

Mass and wave function renormalization In chiral perturbation theory

3 votes
1 answer
283 views

Classical Field Theory Using Geometry

1 vote
1 answer
239 views

Feynman rule for current-current operators

4 votes
0 answers
156 views

Matrix elements of four-quark operators [closed]