Inertial Repulsion from Quantum Geometry

We derive a repulsive, charge-dipole-like interaction for a Dirac particle in a rotating frame, arising from a geometric U(1) gauge symmetry associated with the Berry phase. The Lagrangian of this system includes a non-inertial correction due to centrifugal field coupling. By imposing gauge symmetry and treating it as a full gauge theory, the Lagrangian is extended to include Berry connection and curvature terms. Upon integrating out the geometric gauge field, the effective action is obtained. This leads to the emergence of a repulsive, long-range effective interaction in the Lagrangian. Explicitly, in the non-inertial frame of the observer, the geometric gauge invariance effectively leads to a repulsive Coulomb-interaction in momentum space. In real space, the inertial repulsion manifests in a 1/vert rvert² potential, which is symmetric about the origin of rotation and mirrors charge-dipole interaction.