Constraints on ultralight axions, vector gauge bosons, and unparticles
  from geodetic and frame-dragging effects
  The geodetic and frame-dragging effects are the direct consequences of the
spacetime curvature near earth which can be probed from the Gravity probe B
satellite. The satellite result matches quite well with Einstein's general
relativistic result. However, there is uncertainty between the results of
general relativity and the gravity probe satellite. The gyroscope of the
satellite which measures the spacetime curvature near earth contains lots of
electrons and nucleons. Ultralight axions, vector gauge bosons, and unparticles
can interact with those SM particles through different operators and change the
drift rate of the gyroscope. Some of these ultralight particles can either
behave as a long range force between some dark sector or earth and the
gyroscope or they can behave as a background oscillating dark matter fields or
both. These ultralight particles can contribute to the uncertainties in the
measurement of drift rate of the gyroscope obtained from the GR and GP-B
results and we obtain bounds on different operator couplings. The bounds on the
couplings obtained in this paper are stronger than any other bounds available
in the literature. These ultralight particles can be promising candidates for
dark matter which can be probed from the measurements of geodetic and
frame-dragging effects.
