SU(4) LambdaPS

[TomSt]

Hi Florian,

I am just trying to build a model with a broken SU(4) subgroup, but whenever I try to introduce a VEV, mass matrices in the broken gauge sector fail with:

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Part::partd: "Part specification LambdaPS[[15,1,1]] is longer than depth of object.

It seems to me that LambdaPS might be the generators of the SU(4), expressions like this are still unresolved when calculating these mass matrices. The problem disappears when using SU(3) instead. Can you reproduce this issue?
Like always, thanks for your time.

Cheers,
Tom

[FStaub]

Hi,

the reason for the bug is that I introduced the special symbol LambdaPS for the generators of the Pati-Salam group for a private study. However, these are not yet defined in the source code. So, you can either choose your generators and define them in the model file for instance, or you can take the ones in the basis of Susyno (which is not the standard form) via

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LambdaPS = RepMatrices[SU4, {1, 0, 0}]

It's somehow funny that in the last 5 years nobody was interested in using SARAH with SU(4) models. Now, where I'm modifying that part for some project, you start to run into problems because not all modifications are public so far...

Cheers,
Florian