R. Staudt et Ue. Schroder, INFLUENCE OF THE GRAVITATIONAL-FIELD ON THE QUANTUM STATES OF THE ELECTRON IN A PENNING TRAP, Modern physics letters A, 11(17), 1996, pp. 1429-1443
Starting from the general covariant Dirac equation with minimal coupli
ng of an electromagnetic field the corrections to the energy levels of
the electron in a Penning trap caused by the gravitational field of t
he Earth are computed. Our discussion shows that the resulting effect
is detectable only at the specific eigenfrequencies of the electron. T
he relative shift of these frequencies due to the gravitational field
is found to be 2.1x10(-9). It is briefly indicated how this effect in
principle could be observed in suitable experiments performed with hig
her precision.