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Topics in Statistic Mechanics

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Adv. Sta. Phy. Homework 7 Renormalization Group Li,Zimeng PB06203182<br />

where we have concluded the follow<strong>in</strong>g RG transformation<br />

If the second part of , say<strong>in</strong>g, , is also considered,we would have to<br />

use Feynman diagram to solve the quadratic term.<br />

We will not draw the full Feynman diagram solution here, but will give the result:

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