Cosmic coincidence or graviton mass

  title={Cosmic coincidence or graviton mass},
  author={Saurya Das},
  journal={International Journal of Modern Physics D},
  • Saurya Das
  • Published 15 May 2014
  • Physics
  • International Journal of Modern Physics D
Using the quantum corrected Friedmann equation, obtained from the quantum Raychaudhuri equation, and assuming a small mass of the graviton (but consistent with observations and theory), we propose a resolution of the smallness problem (why is observed vacuum energy so small?) and the coincidence problem (why does it constitute most of the universe, about 70%, in the current epoch?). 
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