Fig. 3: Quantum capacitor properties.
From: Lattice quantum electrodynamics in (3+1)-dimensions at finite density with tensor networks
a Ground state configuration of the quantum capacitor for m = 3.0. b Mean charge density on the sites along the transverse direction for different values of m. c Mean value of the electric field on the transverse links for different values of m. d Ground state configuration of the quantum capacitor for m = −3.0. e Illustration of the creation of a particle-antiparticle pair along the transverse direction, starting from the initial electric field string generated by the boundary charges. f Particle density as a function of m, with a comparison to the case with no boundary charges.
