author={Jonas Mureika and Robert B. Mann},
  journal={Modern Physics Letters A},
If the information transfer between test particle and holographic screen in entropic gravity respects both the uncertainty principle and causality, a lower limit on the number of bits in the universe relative to its mass may be derived. Furthermore, these limits indicate particles that putatively travel at the speed of light — the photon and/or graviton — have a nonzero mass m ≥10-68kg. This result is found to be in excellent agreement with current experimental mass bounds on the graviton and… 

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