Strongly incoherent gravity

Understand

While most fundamental interactions in nature are known to be mediated by quantized fields, the possibility has been raised that gravity may behave differently.

• Making this concept precise enough to test requires consistent models.
• Here we construct an explicit example of a theory where a non-entangling version of an arbitrary two-body potential $V(r)$ arises from local measurements and feedback forces.
• While a variety of such theories exist, our construction causes particularly strong decoherence compared to more subtle approaches.