9 papers
Probing Lorentz invariance via diphoton decays of the Higgs boson
Alan Kostelecky, Connor A. Petway, Nathaniel Sherrill
The prospects for observing small departures from Lorentz invariance are studied using effective interactions of the Higgs boson with photons. A single operator of mass-dimension f…
Characteristic tensors for almost Finsler manifolds
James F. Davis, Benjamin R. Edwards, Alan Kostelecky
Almost Finsler manifolds and partial Finsler manifolds are introduced, extending the standard definition of a Finsler manifold to allow for a nontrivial slit containing points fixe…
Data Tables for Lorentz and CPT Violation
Alan Kostelecky, Neil Russell
This work tabulates measured and derived values of coefficients for Lorentz and CPT violation in the Standard-Model Extension. Summary tables are extracted listing maximal attained…
Progress in Lorentz and CPT Violation
Alan Kostelecky
This talk at the CPT'25 meeting presents an overview of some recent results in Lorentz and CPT violation. Topics covered include the geometry of Finsler spaces associated with Lore…
Lorentz violation and momentum-space geometric phases
Alan Kostelecky, Ralf Lehnert, Marco Schreck +1
Geometric phases can manifest when a relativistic quantum particle moves cyclically along a loop in parameter space. The phase can be affected by the presence of a background field…
Relativistic spin precession in homogeneous background fields
Yunhua Ding, Alan Kostelecky, Arnaldo J. Vargas
The Bargmann-Michel-Telegdi equation, which describes the precession of the spin of a charged Dirac particle moving in a homogeneous electromagnetic field, is generalized to includ…