O. M. Stewart Colloquium

Tuesday, November 8, 2016 4:00pm

Room 223A, Physics Building Library


Prof. Yaakov Friedman

Prof. Yaakov Friedman, Jerusalem College of Technology (Jerusalem, Israel), will present, “On the Influence of Energy on Spacetime,” Tuesday, Nov. 8 at 4 p.m. inthe Physics Building Library.

Einstein's theories of relativity combine the classical absolute space and time into a single interwoven energy-influenced spacetime. Special relativity considers the influence of kinetic energy, whereas general relativity considers the influence of a purely gravitational potential energy. Since the gravitational potential is solely position dependent and all bodies in such a potential follow the same trajectories, the influence of a gravitational potential can be expressed by curving the spacetime.  Does a non-gravitational potential also influence spacetime? We propose a Relativistic Newtonian Dynamics, a model which describes the influence of any potential and the modification of the dynamics resulting from it.  This model predicts accurately both the anomalous precession of Mercury and the periastron advance of the Hulse-Taylor binary without curving the spacetime.

Moreover, this model also explains the change of dynamics in the microscopic region. Using synchrotron radiation and Mossbauer spectroscopy for a rapidly rotating absorber, we also obtained experimental indication for the influence of non-gravitational potential energy on spacetime.