Jayant Narlikar

Jayant Narlikar

Jayant Vishnu Narlikar (born July 19, 1938) (Marathi: जयंत विष्णू नारळीकर) is an Indian astrophysicist.

Narlikar is a proponent of steady state cosmology. He developed with Sir Fred Hoyle the conformal gravity theory, commonly known as Hoyle–Narlikar theory. It synthesizes Albert Einstein’s Theory of Relativity and Mach's Principle. It proposes that the inertial mass of a particle is a function of the masses of all other particles, multiplied by a coupling constant, which is a function of cosmic epoch. In cosmologies based on this theory, the gravitational constant G decreases strongly with time.