Is the Quantum Hall Effect influenced by the gravitational field?

Details Is the Quantum Hall Effect influenced by the gravitational field? Is the Quantum Hall Effect influenced by the gravitational field?

2003-10-13

arxiv.org/abs/cond-mat/0310281v1

Phys.Rev.Lett. 93 (2004) 096804

Physics

Condensed Matter

4 pages

Scientific paper

10.1103/PhysRevLett.93.096804

Most of the experiments on the quantum Hall effect (QHE) were made at approximately the same height above sea level. A future international comparison will determine whether the gravitational field $\mathbf{g}(x)$ influences the QHE. In the realm of (1 + 2)-dimensional phenomenological macroscopic electrodynamics, the Ohm-Hall law is metric independent (`topological'). This suggests that it does not couple to $\mathbf{g}(x)$. We corroborate this result by a microscopic calculation of the Hall conductance in the presence of a post-Newtonian gravitational field.

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