Let us consider the Hilbert space $L^2([0,\infty))$ and the operator $H=-\frac{d^2}{dx^2} + \frac{1}{x}$ on the domain of $C^{\infty}_0((0,\infty))$, smooth (smooth functions with compact support away from $0$).
Is the operator $H$H essentially self-adjoint? What is the domain of its self-adjoint extension?