We take as a starting point an expression for the quantum geometric tensor recently derived in the context of the gauge/gravity duality. We proceed to generalize this formalism in such way it is possible to compute the geometrical phases of quantum systems. Our scheme provides a conceptually complete description and introduces a different point of view of earlier works. Using our formalism, we show how this expression can be applied to well-known quantum mechanical systems.

arXiv:1702.00058Journal of High Energy PhysicsMar 1, 201733 citations

Physics Letters A

Gauge variant Lagrangians and geometrical phases

P. Campos, J. L. Lucio M., M. Vargas

Published Nov 1, 1993• 3 citations

Publisher

DOI: 10.1016/0375-9601(93)91060-i

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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

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potential, which is symmetric about the origin of rotation and mirrors charge-dipole interaction.