In DRUMS, all magnetic fields arise from vortex circulation in the superfluid membrane and their alignment with the cubic substrate. The magnetic field \(\mathbf{B}\) is derived from circulating currents along substrate nodes:
Where \(\mathbf{A}\) is the vector potential generated by coherent substrate-aligned dipoles. Importantly, the divergence of \(\mathbf{B}\) is always zero:
This is enforced by the superfluid circulation quantization; any field line that starts somewhere must end somewhere else along a substrate-aligned vortex.
Magnetic monopoles would require a net divergence:
Within DRUMS, this is impossible because:
An isolated monopole would create a singularity in the magnetic field, requiring infinite energy to sustain:
The DRUMS superfluid resists any configuration with divergent energy. The cubic substrate energetically forbids singular field sources, so any attempt to create a monopole collapses into a dipole configuration along the lattice.
Vortex topology in DRUMS enforces flux closure:
Any local perturbation can only redistribute flux along existing vortices. There is no allowed topological state that isolates a single magnetic charge.
From DRUMS we conclude rigorously: