The Atoms Of Space, Gravity and the Cosmological Constant

@article{Padmanabhan2016TheAO,
  title={The Atoms Of Space, Gravity and the Cosmological Constant},
  author={Thanu Padmanabhan},
  journal={arXiv: General Relativity and Quantum Cosmology},
  year={2016}
}
  • T. Padmanabhan
  • Published 29 March 2016
  • Physics
  • arXiv: General Relativity and Quantum Cosmology
I describe an approach which connects classical gravity with the quantum microstructure of spacetime. The field equations arise from maximizing the density of states of matter plus geometry. The former is identified using the thermodynamics of null surfaces while the latter arises due to the existence of a zero-point length in the spacetime. The resulting field equations remain invariant when a constant is added to the matter Lagrangian, which is a symmetry of the matter sector. Therefore, the… 

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