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Topics in Statistic Mechanics

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Adv. Sta. Phy. Homework Class Homework Li,Zimeng PB06203182<br />

PB06203182 Advanced <strong>Statistic</strong> Physics Homework 2<br />

By Maple 13<br />

1. What's the relation between observables and correlation function?<br />

Ans:<br />

As to Is<strong>in</strong>g mode, we have<br />

And<br />

Therefore,<br />

2. How MFT, especially Brag-William Model, draw solution of critical exponent?<br />

(Group 3)<br />

Ans:<br />

We need to solve a transcendental equation when try<strong>in</strong>g to obta<strong>in</strong> L(def<strong>in</strong>ition see<br />

below)<br />

Especially when there is no outfield, we have<br />

evaluate at po<strong>in</strong>t<br />

evaluate at po<strong>in</strong>t

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