The Eöt-Wash Group:
Laboratory Tests of Gravitational and sub-Gravitational Physics
We pioneer new techniques in high-precision studies of weak-field
gravity and searches for possible new interactions weaker than gravity.
Our scientific goals:
1) Search for experimental signatures of quantum
gravity that would violate Einstein's Equivalence Principle and/or the Newtonian
inverse-square law at some length scale (which may be anywhere between the
inaccessible Planck length and infinity).
2) Probe the largely unexplored region of possible interactions weaker than gravity.
3) Make sensitive tests for new interactions that couple to electron spin.
4) Provide understanding of small short range forces that may affect the LISA gravitational wave experiment.
Recent Publications and Talks:
Lorentz invariance talk at the Denver APS meeting (April 2009) Denver APS Meeting (April 2009)
Review of torsion-balance experiments Prog. Part. Nucl. Phys 62, 102 (2009)
Recent test of the equivalence principle Phys. Rev. Lett 100, 041101 (2008)
Gravitational constraints on new particle physics Phys. Rev. Lett 98, 131104 (2007)
Recent test of gravity below 100 microns Phys. Rev. Lett 98, 021101 (2007)
Torsion Balance Test of Spin-Coupled Forces Physical Review Letters 97, 021603 (2006)
Recent Review of Inverse Square Law Tests Ann. Rev. Nucl. Part. Sci., 53 77 (2003)
Financial Support:
Our work is supported by the National Science Foundation, by Department of Energy support for the Center for Experimental Nuclear Physics and Astrophysics, and by NASA. Our instruments are located in the Center for Experimental Nuclear Physics and Astrophysics on the University of Washington campus.
© 1987-2009 Eöt-Wash Group. Any opinions, findings, and conclusions or recommendations expressed in this material are those of the author(s) and do not necessarily reflect the views of the National Science Foundation, DOE or NASA. Trouble? Comments? Contact cah49#at#u.washington.edu