You can estimate the size of any diagram by realizing that
Chapter 8, Problem 6P(choose chapter or problem)
Problem 6P
You can estimate the size of any diagram by realizing that f(r) is of order 1 out to a distance of about the diameter of a molecule, and f ≈ 0 beyond that. Hence, a three-dimensional integral of a product of f’s will generally give a result that is of the order of the volume of a molecule. Estimate the sizes of all the diagrams shown explicitly in equation, and explain why it was necessary to rewrite the series in exponential form.
Equation:
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