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Hi, I'm undergraduate student.

Nature is beautiful. As far as I know, She organizes all things is this way:

$$ \exp\left(-S_{\Lambda'}[\phi]\right)\ \stackrel{\mathrm{def}}{=}\ \int_{\Lambda' \leq p \leq \Lambda} \mathcal{D}\phi \exp\left[-S_\Lambda[\phi]\right]. $$

You and me are very effective degrees of freedom that process some Elecron-Volt computation in our brains, doing some Joules with our hands, trying to figuring out all Nature by putting something inside this functional $S_{\Lambda\rightarrow\infty}[\phi]$.


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