Emergent Gravity from an Augmented Variational Principle
arXiv:1604.08067
Abstract
A direct and non-trivial link between Padmanabhan's entropy used in emergent gravity and standard GR action is established. To do that, Augmented Variational Principles (AVP) will be used. We shall discuss how this link accounts for the details of the variation of Padmanabhan's action based on gravitational entropy. It will also clarify the role of the background metric and its non-dynamical role.
19 pages, references added. Some typos and equations (35-37) corrected
References in corpus (9)
- Entropy of Null Surfaces and Dynamics of Spacetime
- Emergent Gravity Paradigm: Recent Progress
- Grin of the Cheshire cat: Entropy density of spacetime as a relic from quantum gravity
- Why Does Gravity Ignore the Vacuum Energy?
- Discovering the Kerr and Kerr-Schild metrics
- Exploring the Nature of Gravity
- Quantum gravity of Kerr-Schild spacetimes and the logarithmic correction to Schwarzschild black hole entropy
- Beam-like Excitations of Kerr-Schild Geometry and Semiclassical Mechanism of Black-Hole Evaporation
- Kerr-Schild Geometry from Cosmology to Microworld and Space-Time Structure