A new perspective on Gravity and the dynamics of Spacetime
arXiv:gr-qc/0510015 · doi:10.1142/S0218271805007863
Abstract
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.
Based on the Essay selected for Honorable Mention in the Gravity Research Foundation Essay Contest, 2005; to appear in the special issue of IJMPD
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- Why Does Gravity Ignore the Vacuum Energy?
- Understanding the origin of CMB constraints on Dark Energy
- Entropy In The Present And Early Universe: New Small Parameters And Dark Energy Problem
- Gravitational Energy, Local Holography and Non-equilibrium Thermodynamics
- Field equations from a surface term
- Quantum Theory at Planck Scale, Limiting Values, Deformed Gravity and Dark Energy Problem
- Deformed Quantum Field Theory, Thermodynamics at Low and High Energies, and Gravity. I
- Thermodynamics of horizons from a dual quantum system
- Can gravitational dynamics be obtained by diffeomorphism invariance of action?
- Vacuum Energy Problem, Fundamental Length and Deformed Quantum Field Theory
- Reply to "Can gravitational dynamics be obtained by diffeomorphism invariance of action?"
- Minimal Length and the Existence of Some Infinitesimal Quantities in Quantum Theory and Gravity