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Results tagged with feyncalc
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user 41346
Questions about Mathematica packages for High Energy Physics and Quantum Field Theory, e.g. FeynCalc, FeynArts, FormCalc, FeynRules, HEPMath, Package-X, LoopTools, Tracer etc.
1
vote
0
answers
601
views
Inserting Lorentz vectors in Lagrangian in FeynRules
I am writing the model file for an effective theory. The lagrangian of the theory has an external physical lorentz vector (say velocity in Heavy Quark Effective Theory where the Kinetic part is $\bar …
- 365
7
votes
1
answer
1k
views
Using ModelMaker.m in FeynArts
I want to write a model file in FeynArts and I came across ModelMaker which takes in the Lagrangian as Input and then generates the .mod file. I am trying to make a model file for $\phi^4$ theory as a …
- 365
0
votes
0
answers
160
views
Expressing the output product using dot
I have an expression of the form Hbar.H where H and Hbar are vectors. How can I get the output so that it has dot in the expression i.e.
H = {a,b,c}
J = {d,e,f}
mathematica gives for H.J ---> ad+be …
- 365