deletions | additions       diff --git a/scattering.tex b/scattering.tex  index 86e83ce..b1d9280 100644  --- a/scattering.tex  +++ b/scattering.tex 
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\tau \sim \frac{1}{\epsilon^2}  \end{equation}  At a temperature $T \ll T_F$, the quasiparticles will be excited at an average energy of $\epsilon =  k_B T$ above the Fermi surface. Therefore, their lifetime will be proportional to $1 / T^2$, meaning that the conductivity of a Fermi Liquid scales as: \begin{equation}  \sigma_{\mathrm{FL}} \sim \frac{1}{T^2}  \end{equation}