A Note on the Gaussian Minimum Conjecture

Let $n\ge 2$ and $(X_i,1\le i\le n)$ be a centered Gaussian random vector. The Gaussian minimum conjecture says that $E\left(\min_{1\leq i\leq n}|X_i|\right)\geq E\left(\min_{1\leq i\leq n}|Y_i|\right)$,where$Y_1,\ldots,Y_n$areindependentcenteredGaussianrandomvariableswith$E(X_i^2)=E(Y_i^2)$forany$i=1,\ldots,n$. In this note, we will show that this conjecture holds if and only if $n=2$.