Bee Hossenfelder called attention to an interesting paper in this post:(adsbygoogle = window.adsbygoogle || []).push({});

A newly proposed table-top experiment might be able to demonstrate that gravity is quantized

http://backreaction.blogspot.com/2015/10/a-newly-proposed-table-top-experiment.html

Here's the paper:

http://arxiv.org/abs/1510.01696

Optomechanical test of the Schrödinger-Newton equation

André Großardt, James Bateman, Hendrik Ulbricht, Angelo Bassi

(Submitted on 6 Oct 2015)

The Schrödinger-Newton equation has been proposed as an experimentally testable alternative to quantum gravity, accessible at low energies. It contains self-gravitational terms, which slightly modify the quantum dynamics. Here we show that it distorts the spectrum of a harmonic system. Based on this effect, we propose an optomechanical experiment with a trapped microdisc to test the Schrödinger-Newton equation, and we show that it can be realized with existing technology.

13 pages, 4 figures, 1 table, 1 page of supplemental material

====comment====

If I understand correctly, the Schrö-Newt equation would hold if gravity were FUNDAMENTALLY semiclassical. And therefore NOT needing to be quantized. Quantum matter would produce a kind of classical probability distribution of gravitational forces--in the non relativistic limit. So if this equation can be experimentally REFUTED this would indicate that gravity is not fundamentally semiclassical and that a quantum theory of gravity is definitely required.

**Physics Forums - The Fusion of Science and Community**

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Optomechanical test of the Schrödinger-Newton equation

Loading...

Similar Threads - Optomechanical test Schrödinger | Date |
---|---|

I Testing Quantum Gravity paper Bose Einstein helium superfluid | Oct 22, 2017 |

I Triggers and Litmus Tests For BSM Physics Papers | Oct 3, 2017 |

I Testing string/m-theory extra dimensions prediction | Aug 4, 2017 |

Tests of loop quantum gravity? | Oct 16, 2014 |

**Physics Forums - The Fusion of Science and Community**