I was wondering: why is the SM always written with a Lagrangian? Couldn't you just as well write it with a Hamiltonian? The way I understand, the Lagrangian gives me the kinetic energy minus the potential energy (basically a measure for the "free energy", though not in the thermodynamical sense), while the Hamiltonian gives me the total energy of the system. Are these quantities interchangable, or is it really neccecary to write the SM in terms of a Lagrangian?(adsbygoogle = window.adsbygoogle || []).push({});

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# Standard Model: Lagrangian vs. Hamiltonian

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