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Gravitational Physics

We are using torsion balances to search for possible new weak interactions. Torsion balance experiments have proven to be extremely powerful tests of theories with new scalar, pseudoscalar or vector particles. Our experiments provide some of the best limits on new interactions and they allow us to study regions of parameter space completely inaccessible to high energy physics experiments. In particular we working on tests of the equivalence principle, the gravitational inverse law, searches for spin-coupled forces and on technology development for torsion balance experiments and for the gravitational wave observatory LIGO.

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