Recent content by evgkr

When I say Quantum Algebra I mean: Non-Commutative operators algebra + Dirac notation.

Hi, Does anybody knows good quantum algebra package for Mathematica ? I'm currently using the package of Cesar Augusto Guerra, but it supports only Mathematica 4.1-4.2 and does not handle well non-operators, thus messing up the simplification process of the equations. In any case, does...

jeff I I am quite new in this forum, but I supose that the purpose of this forum is to supply answers to questions and not ctiticizm on ignorance. My question was: Does anybody knows literature with simillar to Peskin's access to C-S equation and NOT whenever I understand or not what is...

Hi, I'm seeking for a software, witch will alow me to easily draw Feynman diagrams. I have currently found: FeynMF: LaTeX package. Not very nice to use, but very good quality diagrams FeynmanDraw: Very primitive WIN software. Not fine diagrams. FeynDiagram: C++ source for drawing...

Hi, I'm seeking for a software, witch will alow me to easily draw Feynman diagrams. I have currently found: FeynMF: LaTeX package. Not very nice to use, but good quality diagrams FeynmanDraw: Very primitive WIN software. Not fine diagrams. FeynDiagram: C++ source for drawing. Complicated...

Hi everybody. I was given a project to calculate Callan-Symanzik beta function of QED and QCD (with massless fermions) to one loop order. This problem is actually solved in Peskin, BUT without the needed rigor, plus with funny assumptions and also a few mistakes. I have tried for a long time...