deletions | additions       diff --git a/Particle in potential.tex b/Particle in potential.tex  index 67c3352..0c244c3 100644  --- a/Particle in potential.tex  +++ b/Particle in potential.tex 
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Treat as absorbing boundary with drift, like Payam2.3.  If we can make free energy change zero, then $\langle e^{-\beta W}\rangle = 1$. With dissipative process. Other ideas from park.