Let $G\sim\gamma_n$, and let $f:\mathbb R^n\to\mathbb R$ be $L$-Lipschitz with $L>0$. Then for every $t\ge 0$,
\begin{align*}
\mathbb P(f(G)-\mathbb E[f(G)]\ge t)\le \exp\left(-\frac{t^2}{2L^2}\right).
\end{align*}
For $L=0$, the corresponding centered [random variable](/page/Random%20Variable) is identically $0$.