[tex]\delta^{\left(d\right)}\left(\b{q}-\b{q}\prime \right)[/tex](adsbygoogle = window.adsbygoogle || []).push({});

from Quantum Field theory and Critical Phenomena by Justin.. (the text covers QFT from a statistical view)

Question: what does the d in brackets mean/do ?

Thanks =)

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# Quick notation question (QFT)

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