Possibility to view simplified readable output

[amanmdesai]

Hello,

This is regarding the output of MARTY after computing the amplitudes.

In the final result, there are abbreviations (implemented automatically by Marty). While this maybe useful when viewing results on terminal, it would be useful to know if there exists is a way to export the output to a latex with all the abbreviations substituted back into the final result (just the way it is in LanHEP).

Thanks, Aman

[docbrown1955]

Hello Aman, There is no built-in way to generate a LaTeX expression for now, although I am thinking to make it happen soon.

To expand abbreviations in a csl::Expr object, it is enough to call the following function:

    csl::Evaluate(expr, csl::eval::abbreviation);

Also, from a mty::Amplitude object it is possible to get the list of expressions (one for each diagram) using:

    std::vector<csl::Expr> diagramExpressions = amplitude.obtainExpression();

Combining these two techniques you should be able to at least get the expanded output for all diagrams, even thoug it will not be directly a LaTeX expression.

[amanmdesai]

Hello @docbrown1955

Thanks for your reply and suggestion. This should be helpful.

[docbrown1955]

See the related PR to support nice latex output ;) https://github.com/docbrown1955/marty-public/pull/62

[amanmdesai]

Thanks very much @docbrown1955