title: Using the Earth as a polarized electron source to search for long-range spin-spin interactions.
abstract: Many particle-physics models that extend the standard model predict the existence of long-range spin-spin interactions. We propose an approach that uses the Earth as a polarized spin source to investigate these interactions. Using recent deep-Earth geophysics and geochemistry results, we create a comprehensive map of electron polarization within the Earth induced by the geomagnetic field. We examine possible long-range interactions between these spin-polarized geoelectrons and the spin-polarized electrons and nucleons in three laboratory experiments. By combining our model and the results from these experiments, we establish bounds on torsion gravity and possible long-range spin-spin forces associated with the virtual exchange of either spin-one axial bosons or unparticles.
authors: Physics Department, Amherst College, Amherst, MA 01002, USA. lrhunter@amherst.edu
authors: Larry
authors: L
authors: Hunter
authors: Joel
authors: J
authors: Gordon
authors: Stephen
authors: S
authors: Peck
authors: Daniel
authors: D
authors: Ang
authors: Jung-Fu
authors: JF
authors: Lin