Fig. 2: Ground-state one-particle densities of positronic lithium and benzene.
From: Neural network variational Monte Carlo for positronic chemistry
Orthographic projections of the ground-state one-particle density for positronic (a) dilithium and (b) benzene molecules. Left/right columns show the electronic/positronic density. In the dilithium molecule, the positron is seen to be strongly localized to a torus wrapping the covalent bond. In the benzene molecule, the positronic component of the wavefunction is highly diffuse, resulting in a much noisier Monte Carlo estimate of the one-particle density. The positronic density resembles a p-orbital sandwiching the aromatic ring. The scale bar in the bottom left of each subfigure indicates the relative size of one Bohr radius, a0.
