University of Birmingham > Talks@bham > Cold Atoms > Cosmic gravity as the basis for dynamics, relativity and atomic clock timing: New paradigm and experimental results

Cosmic gravity as the basis for dynamics, relativity and atomic clock timing: New paradigm and experimental results

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  • UserUnnikrishnan (Tata Institute of Fundamental Research)
  • ClockWednesday 27 February 2013, 14:00-15:00
  • HousePhysics East 217.

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The fact that the fundamental theories of physics were completed well before any significant knowledge about the real universe and its enormous gravity was available necessitates a re-examination of these theories, especially that of dynamics and relativity. The results of this analysis, along with several experimental facts, reveal that the matter frame of the universe provides a preferred absolute frame and that its gravity determines the laws of motion. In a grand generalization of Machian thought, Newton’s law of motion arises as a relativistic gravitational effect, the equivalence principle as a natural consequence of the gravitational effect in the massive universe, and the entire relativistic modification of rates of atomic clocks as a gravitational time dilation with absolute velocity as the key factor instead of relative velocities. These ideas of ‘Cosmic Relativity’ unify kinematics and dynamics, answering outstanding fundamental questions. Compelling experimental evidence involving simple configurations of magnets and charges in relative motion reveals new aspects of electrodynamics that point to new relativity. Two experiments that examine the one-way relative speed of light clearly reveal the first order Galilean anisotropy predicted by Cosmic Relativity, invalidating the hypothesis of the invariance of the relative one-way speed of light, the fundamental principle underlying the present paradigm of physics. This necessitates a paradigm change in which gravitational influence of the matter filled universe determines laws of motion, dynamics and the physics of relativity.


1) C. S. Unnikrishnan, Light and the Observer: New Experiments and a Critique of Our Common Beliefs About Light, Proc. SPIE conference ‘The Nature of Light: What are Photons?’ (Ed. C. Roychoudhuri, Al. F. Kracklauer and Katherine Creath), San Diego, 66640R (2007).

2) C. S. Unnikrishnan, “New measurements of the one-way speed of light and its relation to clock comparison experiments”, to appear in the Proceedings of the 11th Marcel Grossmann meeting, Berlin 2006, p2512, (Eds. H. Kleinert, R.T. Jantzen and R. Ruffini, World Scientific, Singapore, 2008).

3) C. S. Unnikrishnan, Physics in the Once Given Universe: New Perspectives on Dynamics, Relativity, Quantum Spectra and The Spin-Statistics Connection, pp 99-120 in Recent Developments in Theoretical Physics, Eds. S. Ghosh and G. Kar, (World Scientific, Singapore, 2010).

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