Gravity as an emergent phenomenon: A conceptual description

Abstract

I describe several broad features of a programme to understand gravity as an emergent, long wavelength, phenomenon (like elasticity) and discuss one concrete framework for realizing this paradigm in the backdrop of several recent results.

11 p; AIP stylefiles included; Summary of several plenary talks in the conferences including XXIII Texas Symposium in Relativistic Astrophysics (Melbourne, Dec, 06); IAGRG Meeting (Delhi, Feb, 07); International workshop on theoretical high energy physics (Roorkee, Mar, 2007); to appear in the proceedings of IWTHEP

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• Emergent Geometry from Quantized Spacetime
• Dynamical horizon entropy and equilibrium thermodynamics of generalized gravity theories
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• A note on the connection between the universal relaxation bound and the covariant entropy bound
• Thermodynamics in the universe described by the emergence of the space and the energy balance relation
• Thermodynamics of Evolving Lorentzian Wormhole at Apparent and Event Horizons
• On the statistical-mechanical meaning of the Bousso bound
• Comparing Quantum Gravity Models: String Theory, Loop Quantum Gravity, and Entanglement gravity versus $SU(\infty )$-QGR
• Einstein's equations and the pseudo-entropy of pseudo-Riemannian information manifolds
• Signatures of an Emergent Gravity from Black Hole Entropy