From B-modes to quantum gravity and unification of forces

  title={From B-modes to quantum gravity and unification of forces},
  author={Lawrence Krauss and Frank Wilczek},
  journal={International Journal of Modern Physics D},
It is commonly anticipated that gravity is subjected to the standard principles of quantum mechanics. Yet some — including Einstein — have questioned that presumption, whose empirical basis is weak. Indeed, recently Dyson has emphasized that no conventional experiment is capable of detecting individual gravitons. However, as we describe, if inflation occurred, the universe, by acting as an ideal graviton amplifier, affords such access. It produces a classical signal, in the form of macroscopic… 
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