laser1
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- Homework Statement
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- Relevant Equations
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From Blundell and Blundell Chapter 20 Problem 20.3.
I have proved that $$1-e^{-\beta \omega}=2\sinh\left(\frac{\beta \omega}{2}\right)$$ with no problem, but I am stuck on the ##\coth## term. I have tried to solve this but it gets messy and I'd rather not include them here. Thanks!