Laboratory Tests of Gravitational Physics Using a Cryogenic Torsion Pendulum
E. C. Berg (1), J. H. Steffen (2), M. K. Bantel (1), P. E. Boynton, (2), W. D. Cross (1), T. Inoue (1), M. W. Moore (2), R. D. Newman (1) ((1), University of California, Irvine, (2) University of Washington)
TL;DR
This paper reports on gravitational physics experiments using cryogenic torsion pendula, aiming to measure G, test the inverse square law at 10 cm, and verify the weak equivalence principle with high precision.
Contribution
It introduces a new experimental setup with cryogenic torsion pendula for precise gravitational measurements and tests of fundamental physics principles.
Findings
Progress in measuring gravitational constant G
Initial results on inverse square law tests at 10 cm
Plans for testing the weak equivalence principle
Abstract
Progress and plans are reported for a program of gravitational physics experiments using cryogenic torsion pendula undergoing large amplitude torsional oscillation. The program includes a UC Irvine project to measure the gravitational constant G and joint UC Irvine - U. Washington projects to test the gravitational inverse square law at a range of about 10 cm and to test the weak equivalence principle.
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