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I did not know where to post this, so my apologies in advance and move it if necessary. But could anyone explain this equation to me?

L = [itex]\Phi[/itex]^{+}[i [itex]\partial[/itex]_{[itex]\tau[/itex]}- H][itex]\Phi[/itex] + [itex]\Phi[/itex]^{+}* [itex]\Phi[/itex] * [itex]\Phi[/itex]

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# Explain this equation

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