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UNIVERSITY OF BUCHAREST
FACULTY OF PHYSICS Guest
2024-11-23 17:49 |
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Conference: Bucharest University Faculty of Physics 2014 Meeting
Section: Theoretical Physics and Applied Mathematics
Title:
Einstein's Theory of Gravitation: A Centenary Perspective
Authors:
I. SANDRU
Affiliation:
University of Bucharest, Faculty of Physics, Department of Theoretical Physics, Mathematics, Optics and Lasers
E-mail
ion.sandru@gmail.com
Keywords:
general relativity
Abstract:
Once one takes into account the gravity the Special Relativity is an unsatisfactory theory. For this reason, in 1907, Einstein published an article on accelerated movement in which he argued that free fall is actually inertial motion. Basically, this argument is known as Einstein's equivalence principle.
Consistent with this, between 1907 and 1915, Einstein developed a relativistic and revolutionary new theory according to which the gravitational attraction between masses results from the warping of space and time by those masses. Mathematically, the metric tensor of this curved space-time is provided by Einstein's field equations, and the world-line of an inertial particle or pulse of light is a geodesic of this metric. Over time, General Relativity, a very accurately checked theory within solar system, was imposed as an essential tool in modern Astrophysics and Cosmology. Its success has enhanced the development of differential geometry and topology. After a century of its appearance, General Relativity has radically changed the physicist's conception of nature.
This presentation reviews some of these issues.
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