Spacetime Variation of Lorentz-Violation Coefficients at Nonrelativistic   Scale
  When the Standard-Model Extension (SME) is applied in curved spacetime, the Lorentz-violation coefficients must depend on spacetime position. This work describes some of the consequences of this spacetime variation. We focus on effects that appear at a nonrelativistic scale and extract sensitivity of completed experiments to derivatives of SME coefficient fields. 
Charles D. Lane
hep-ph