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## Main Question or Discussion Point

Here I have some questions when reading a paper on supersymmetry. I am not familiar with those phrases below.

1, what is called 'rigid symmetry'?

2, does 'propagating degrees of freedom' mean degrees of freedom on shell?

3, when one says 'the gauge field are not dynamical', does it mean it has no degree of freedom on shell?

Thanks.

1, what is called 'rigid symmetry'?

2, does 'propagating degrees of freedom' mean degrees of freedom on shell?

3, when one says 'the gauge field are not dynamical', does it mean it has no degree of freedom on shell?

Thanks.