There is; the equation on the CERN mug in the photo is an example. For example, the gluon Lagrangian (Section 1) may be more compactly written -1/2 Tr F_{\mu\n

There is; the equation on the CERN mug in the photo is an example. For example, the gluon Lagrangian (Section 1) may be more compactly written -1/2 Tr F_{\mu\nu} F^{\mu\nu} for a suitably defined F. Or further abbreviated to something like L_g. It just depends on how much detail you need to expose.