A new perspective on Gravity and the dynamics of Spacetime

Details A new perspective on Gravity and the dynamics of Spacetime A new perspective on Gravity and the dynamics of Spacetime

2005-10-04

arxiv.org/abs/gr-qc/0510015v2

Int.J.Mod.Phys. D14 (2005) 2263-2270

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

Based on the Essay selected for Honorable Mention in the Gravity Research Foundation Essay Contest, 2005; to appear in the spe

Scientific paper

10.1142/S0218271805007863

The Einstein-Hilbert action has a bulk term and a surface term (which arises from integrating a four divergence). I show that one can obtain Einstein's equations from the surface term alone. This leads to: (i) a novel, completely self contained, perspective on gravity and (ii) a concrete mathematical framework in which the description of spacetime dynamics by Einstein's equations is similar to the description of a continuum solid in the thermodynamic limit.

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