Gravity could kill Macroscopic superpositions

Miles Blencowe’s recent work, PRL 111, 021302 (2013), shows that Gravity induces the rapid decoherence of stationary matter superposition states when the energy differences in the superposition exceed the Planck energy scale. This could kill the possibility of the macroscopic superposition states as the Gravity, unlike environmental thermal noises, can never be eliminated.

More details see Physics 6, 78 (2013), “Gravity Makes the Universe Classical“.

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