Can I read The Right Side of Einstein's Equation on EtoBox?

The Right Side of Einstein's Equation by Spiegel, Edward A is a scholarly article available to read on EtoBox.

What is The Right Side of Einstein's Equation about?

Recent developments in observational cosmology have led to attempts to make modifications on both sides of the Einstein equation to explain some of the puzzling new findings. What follows is an examination of the source of gravity that we usually find on the right hand side of Einstein's equation. The outcome is a modified version of the stress-energy tensor that is the source of the gravitational field. The derivation is based on the kinetic theory of a gas of identical particles with no internal structure. The presentation here is in two parts. In Part I, I describe the stress tensor that Xinzhong Chen and I have proposed for the matter tensor for a nonrelativistic gas with input from Hongling Rao and Jean-Luc Thiffeault. Our derivation of the equations of fluid dynamics is based on kinetic theory without recourse to the standard Chapman-Enskog approximation. In Part II, I present the analogous derivation of our form for the stress-energy tensor in the relativistic case. Then I exhibit its application to the usual isotropic cosmological model. The result of that, in addition to the Friedmann solution, is a second solution that arises from terms discarded in the usual Chapman-Ensk

Author

Spiegel, Edward A

Published

2014

Language

EN